<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE ead PUBLIC "+//ISBN 1-931666-00-8//DTD ead.dtd (Encoded Archival Description (EAD) Version 2002)//EN" "https://www.nationaalarchief.nl/collectie/ead/ead.dtd">
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            <eadid urn="NL-HaNA_2.17.5341.ead.xml" mainagencycode="NL-HaNA" countrycode="NL" publicid="-//Nationaal Archief//TEXT (NL-HaNA::2.17.5341::Rijksinstituut voor Drinkwatervoorziening )//NL" url="http://hdl.handle.net/10648/7f02909b-494a-79fa-e053-09f0900a5ea8">2.17.5341</eadid>
            <filedesc>
              <titlestmt>
                <titleproper>Inventaris van het archief van het Rijksinstituut van Drinkwatervoorziening, (1904) 1913-1983 (1984)</titleproper>
                <author>CAS </author>
              </titlestmt>
              <editionstmt>
                <edition>Versie: 12-01-2023</edition>
              </editionstmt>
              <publicationstmt>
                <publisher>Nationaal Archief, Den Haag</publisher>
                <date calendar="gregorian" normal="2009" era="ce">2009</date>
                <p id="copyright">
                  <extref linktype="simple" show="new" actuate="onrequest" href="http://creativecommons.org/publicdomain/zero/1.0/">cc0</extref>
                </p>
              </publicationstmt>
            </filedesc>
            <profiledesc>
              <creation audience="internal">Deze digitale toegang is in <date normal="2009">2009</date> vervaardigd door Centrale Archief Selectiedienst op basis van de richtlijn <title>Het gebruik van Encoded Archival Description op het Nationaal Archief, versie 1.7.2</title>. Eindredactie:, <date normal="20091204">20091204</date>.</creation>
              <langusage>This finding aid is written in <language langcode="dut" scriptcode="Latn">Dutch</language>.</langusage>
              <descrules audience="internal">Deze toegang is vervaardigd met inachtneming van de volgende richtlijnen:<bibref>
                  <title>ISAD(G): Algemene Internationale Norm voor Archivistisch Beschrijven, vertaling van de tweede uitgave</title>, Antwerpen / Leuven / Amsterdam 2004</bibref>;<bibref>
                  <title>Archiefterminologie voor Nederland en Vlaanderen</title>, Stichting Archiefpublicaties, 's-Gravenhage 2003</bibref>.</descrules>
            </profiledesc>
            <revisiondesc audience="internal">
              <change>
                <date calendar="gregorian" normal="20190401" era="ce">1 april 2019</date>
                <item>
                  <num>1</num> Inventarisnummers 13, 30, 48, 798, 2882 en 2965 , door <persname>Diederick Kortlang</persname>
                </item>
              </change>
              <change>
                <date calendar="gregorian" normal="20230112" era="ce">12 januari 2023</date>
                <item>
                  <num>2</num> inv.nrs. 3275 en 3276 toegevoegd, door <persname>Stella Mechelse</persname>
                </item>
              </change>
            </revisiondesc>
          </eadheader>
          <archdesc level="fonds" type="inventory">
            <did>
              <head>Beschrijving van het archief</head>
              <unittitle label="Naam archiefblok: ">Rijksinstituut voor Drinkwatervoorziening </unittitle>
              <unittitle type="short">Rijksinstituut voor Drinkwatervoorziening </unittitle>
              <unitdate calendar="gregorian" normal="1913/1983" era="ce" label="Periodisering: " type="bulk">archiefvorming: 1913-1983</unitdate>
              <unitdate calendar="gregorian" normal="1903/1984" era="ce" type="inclusive">oudste stuk - jongste stuk: 1903-1984</unitdate>
              <unitid repositorycode="NL-HaNA" countrycode="NL" label="Archiefbloknummer: ">5341</unitid>
              <physdesc label="Omvang: ">
                <extent unit="files">3277 inventarisnummer(s)</extent>; <extent unit="meter">77,00 meter</extent>
              </physdesc>
              <langmaterial label="Taal van het archiefmateriaal: ">Het merendeel der stukken is in het <language langcode="dut" scriptcode="Latn">Nederlands</language>.</langmaterial>
              <materialspec label="Soort archiefmateriaal: ">Normale geschreven, getypte en gedrukte documenten, geen bijzondere handschriften.</materialspec>
              <repository label="Archiefdienst: ">Nationaal Archief</repository>
              <physloc label="Locatie: ">Den Haag</physloc>
              <origination label="Archiefvormers: ">
                <corpname>Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>, , 1913-1984
</origination>
              <abstract label="Samenvatting van de inhoud van het archief: ">Het archief bevat stukken over de organisatie van en toezicht op de drinkwatervoorziening en waterleidingbedrijven in Nederland in de periode 1913-1983</abstract>
            </did>
            <descgrp type="context">
              <head>Archiefvorming</head>
              <bioghist>
                <head>Geschiedenis van de archiefvormer</head>
                <p>Bij Koninklijk Besluit (KB) van 17 mei 1913 (Stcr. nr. 46) werden het Rijksbureau voor Drinkwatervoorziening en de Centrale Commissie voor de Drinkwatervoorziening opgericht. </p>
                <p>Vanaf het begin was het Rijksbureau verantwoordelijk voor de administratieve en technische ondersteuning van de Commissie. Door de uitbreiding van de adviserende functie en de samenvoeging van technische kennis ontwikkelde het Rijksbureau zich tot een technisch-wetenschappelijk instituut en bleef de Centrale Commissie een adviesorgaan van de minister.</p>
                <p>Taken van het Rijksbureau / later het Rijksinstituut:</p>
                <p>A. Ten behoeve van Binnenlandse Zaken (dit was in 1913 het ministerie waaronder het RID ressorteerde):</p>
                <p>1. de rechtstreekse behandeling met dit departement van de zaken die betrekking hebben op of inverband staan met de drinkwatervoorziening;</p>
                <p>2. de uitoefening van het te houden toezicht op het technisch en economisch beheer van de drinkwatervoorzieningen, die daarvoor krachtens de bestaande of nog te maken bepalingen in aanmerking komen;</p>
                <p>3. de leiding van de onderzoekingen die ter boorbereiding van de drinkwatervoorziening vanwege het Departement van Binnenlandse Zaken worden verricht;</p>
                <p>4. het opmaken van plannen voor drinkwatervoorziening, voor zover deze vanwege het Departement van Binnenlandse Zaken worden opgevat;</p>
                <p>5. het toezicht op de uitvoering van de plannen;</p>
                <p>6. het verzamelen en bewerken van alle gegevens die voor de drinkwatervoorziening van belang kunnen zijn.</p>
                <p>B. Ten behoeve van derden:</p>
                <p>1. het op desbetreffend verzoek geven van voorlichting;</p>
                <p>2. het op desbetreffend verzoek van provinciale en gemeentebesturen, verenigingen maken van plannen voor de drinkwatervoorziening;</p>
                <p>3. het op desbetreffend verzoek geven van leiding aan, toezien op, doen uitvoeren van en rapporteren over alle praktische en wetenschappelijke onderzoekingen die verband houden met de drinkwatervoorziening.</p>
                <p>Niet in de wet vermeld zijn de volgende taken:</p>
                <p>1. administratieve ondersteuning van de Centrale Commissie voor Drinkwatervoorziening en de Commissie Grondwaterwet Waterleidingbedrijven;</p>
                <p>2. Tot 1973 geeft de directeur van het RID leiding aan de Directie Drinkwatervoorziening van het Ministerie van Volksgezondheid en Milieuhygiëne.</p>
                <p>In 1940 werd de naam van het Rijksbureau omgezet in Rijksinstituur voor Drinkwatervoorziening (RID). Aanvankelijk ondersteunde het instituut de totstandkoming van een landelijk netwerk voor openbare drinkwatervoorziening, hoofdzakelijk in de vorm van provinciale en regionale drinkwatermaatschappijen. Ook het stelsel van riolering werd voor de Tweede Wereldoorlog verder uitgebouwd.</p>
                <p>In het verlengde hiervan hield men zich bezig met onderzoek naar de kwaliteit van het drinkwater, het grondwater en het oppervlaktewater. In de jaren zestig hield het RID zich, na de voltooiing van het rioleringsnetwerk, meer bezig met milieuproblematiek. </p>
                <p>Vanaf de tweede helft van de jaren zestig was het RID intensief betrokken bij de voorbereiding van basisplannen ten behoeve van structuurplannen voor de drink- en industriewatervoorziening. </p>
                <p>Het RID voerde tevens het secretariaat van de Commissie Bescherming Waterleidingbedrijven met het oog op oorlogsomstandigheden, in het kader van de bescherming van de bevolking in tijden van oorlog. De minister heeft het RID in 1964 opdracht gegeven tot het opstellen van basisplannen, als grondslag voor de toekomstige uitbreiding van de bestaande watervoorziening. Als resultaat daarvan stelde de regering in 1975, door een zogenaamde planologische kernbeslissing, het Structuurschema Drink- en Industriewatervoorziening 1972 vast.</p>
                <p>In 1968 werd een overeenkomst gesloten met de World Health Organization (WHO) voor onderzoeken door het ‘International Reference Centre for community water supply’ (IRC), dat bij het RID werd ondergebracht. Vanaf deze tijd werd de kennis op het terrein van de drinkwatervoorziening ook ingezet ten behoeve van projecten in de Derde Wereld.</p>
                <p>De afronding door het RID van de openbare drinkwatervoorziening en de ontwikkeling naar een technisch-wetenschappelijk instituut met raakvlakken op terreinen van volksgezondheid, waterstaat en milieu leidde in de jaren zeventig tot discussies over een nieuwe plaatsbepaling van het instituut. In het kader van de scheiding van beleidsvoorbereiding, uitvoering en advisering werd in 1973 een Directie Drinkwatervoorziening ingesteld binnen het Directoraat-Generaal voor Milieuhygiëne van het Ministerie van Volksgezondheid en Milieuhygiëne (VoMil), waaraan de directeur van het RID leiding gaf. In deze Directie waren de juridische- en economische afdeling van het RID opgenomen. </p>
                <p>Op het gebied van wetgeving was er ook een rol weggelegd voor het RID. Met name via de Commissie Grondwaterwet Waterleidingbedrijven (Stb. 1955, 61). Het RID heeft aan deze Commissie onder andere administratieve ondersteuning verleend en zich ook op ander gebied ingespannen om bijdragen te leveren aan de Grondwaterwet. Met de totstandkoming van de Waterleidingwet werd ook een Raad voor de Drinkwatervoorziening ingesteld, die de minister van advies diende bij de toepassing van de Waterleidingwet. Vanaf 1971 was er sprake van gecombineerde vergaderingen met de Centrale Commissie voor de Drinkwatervoorziening.</p>
                <p>Aan het begin van de jaren tachtig werd de heroriëntatie afgerond met een besluit tot integratie van het RID met het Rijksinstituut voor de Volksgezondheid (RIV). De samenvoeging werd op 1 januari 1984 een feit. Deze samenvoeging was het gevolg van het principebesluit van de ministerraad op 24 december 1982 tot bundeling van de drie onderzoeksinstellingen op het terrein van de volksgezondheid en milieuhygiëne. Het nieuwe instituut werd gevestigd te Bilthoven.</p>
              </bioghist>
              <custodhist>
                <head>Geschiedenis van het archiefbeheer</head>
                <p></p>
              </custodhist>
            </descgrp>
            <descgrp type="content_and_structure">
              <head>Inhoud en structuur van het archief</head>
              <scopecontent>
                <head>Inhoud</head>
                <p></p>
              </scopecontent>
              <appraisal>
                <head>Selectie en vernietiging</head>
                <p>Als basis voor de selectie dienden de volgende selectielijsten:</p>
                <p>- Selectielijst voor de neerslag van de handelingen van de Minister van Volksgezondheid, Welzijn en Sport en de onder hem ressorterende actoren op het beleidsterrein Drinkwatervoorziening over de periode 1913-1983”, vastgesteld bij beschikking 25 januari 2005 (Stcrt. 2005-79)</p>
                <p>- Selectielijst voor de neerslag van de handelingen van de Minister van Volksgezondheid, Welzijn en Sport en de onder hem ressorterende actoren op het beleidsterrein Milieubeheer over de periode vanaf 1945, vastgesteld bij beschikking 14 augustus 2003 (Stcrt. 2003-155)</p>
                <p>In totaal is 714 meter bewerkt. Hiervan is 569 meter als te vernietigen aangemerkt en is na verkregen toestemming afgevoerd conform het rijksoverheidscontract naar Van Gansewinkel Nederland BV en daar op de gebruikelijke manier vernietigd. </p>
                <p>Tevens is 50 meter archief aangetroffen van het Rijksinstituut voor Volksgezondheid en Milieuhygiëne (RIVM), dit deel is als vreemd archief aangemerkt en geretourneerd naar de zorgdrager.</p>
                <p>Het te bewaren bestand, totaal 95 meter, is overgedragen aan het Nationaal Archief.</p>
              </appraisal>
              <accruals>
                <head>Aanvullingen</head>
                <p></p>
              </accruals>
              <processinfo>
                <head>Verantwoording van de bewerking</head>
                <p>Als uitvloeisel van het meerjarenconvenant, afgesloten op 30 november 1999, tussen het Ministerie van Volksgezondheid, Welzijn en Sport, het Ministerie van Binnenlandse Zaken en Koninkrijksrelaties en de Centrale Archiefselectiedienst (CAS), is in de periode 2005 - 2008 het archief van het Rijksinstituut voor Drinkwatervoorziening bewerkt, totaal 714 meter. </p>
                <p>Voor de materiële staat van het archief is de bewerking uitgevoerd conform de Regeling duurzaamheid archiefbescheiden. </p>
                <p>Oorspronkelijk bestond deze toegang uit 2  Institutionele toegangen (een op het beleidsterrein Milieubeheer, oorspronkelijke nummer 5.094 en de ander op de bedrijfsvoering RID - 5.178) die later zijn samengevoegd tot 1 inventaris</p>
              </processinfo>
              <arrangement>
                <head>Ordening van het archief</head>
                <p></p>
              </arrangement>
            </descgrp>
            <descgrp type="access_and_use">
              <head>Aanwijzingen voor de gebruiker</head>
              <accessrestrict id="accessrestrict">
                <head>Openbaarheidsbeperkingen</head>
                <legalstatus>Volledig openbaar.</legalstatus>
              </accessrestrict>
              <userestrict>
                <head>Beperkingen aan het gebruik</head>
                <p></p>
              </userestrict>
              <phystech>
                <head>Materiële beperkingen</head>
                <p>Het archief kent geen beperkingen voor het raadplegen van stukken als gevolg van slechte materiële staat.</p>
              </phystech>
              <odd type="application_instruction">
                <head>Aanvraaginstructie</head>
                <p>Openbare archiefstukken kunnen online worden aangevraagd en gereserveerd. U kunt dit ook via de terminals in de studiezaal van het Nationaal Archief doen. Om te kunnen reserveren dient u de volgende stappen te volgen: 
<list numeration="arabic" type="ordered">
                    <item>
                      <extref linktype="simple" show="new" actuate="onrequest" href="https://www.nationaalarchief.nl/user/login">Creëer een account of log in</extref>.</item>
                    <item>Selecteer in de archiefinventaris een archiefstuk.</item>
                    <item>Klik op ‘Reserveer’ en kies een tijdstip van inzage.</item>
                  </list>
                </p>
              </odd>
              <prefercite>
                <head>Citeerinstructie</head>
                <p>Bij het citeren in annotatie en verantwoording dient het archief  tenminste éénmaal volledig en zonder afkortingen te worden vermeld. Daarna kan worden volstaan met verkorte aanhaling.</p>
                <p>VOLLEDIG: <lb></lb>Nationaal Archief, Den Haag, Rijksinstituut voor Drinkwatervoorziening , nummer toegang 2.17.5341, inventarisnummer ... </p>
                <p>VERKORT: <lb></lb>NL-HaNA, Rijksinstituut voor Drinkwatervoorziening , 2.17.5341, inv.nr. ... </p>
              </prefercite>
            </descgrp>
            <descgrp type="allied_materials">
              <head>Verwant materiaal</head>
              <altformavail>
                <head>Beschikbaarheid van kopieën</head>
                <p>Inventarisnummers van dit archief zijn niet in kopievorm beschikbaar</p>
              </altformavail>
              <separatedmaterial>
                <head>Afgescheiden archiefmateriaal</head>
                <p></p>
              </separatedmaterial>
            </descgrp>
            <dsc type="combined">
              <head>Beschrijving van de series en archiefbestanddelen</head>
              <c level="series">
                <did>
                  <unitid type="series_code">094</unitid>
                  <unittitle>Gegevensbestanden m.b.t. het beleidsterrein Milieubeheer</unittitle>
                </did>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">8</unitid>
                    <unittitle>Het voorbereiden, medevaststellen, coördineren en evalueren van beleid inzake water- en drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Product: 'De toekomstige drinkwatervoorziening van Nederland' (uit 1967).<lb></lb>Beleidsnota's, beleidsnotities, rapporten, adviezen, evaluaties.
</item>
                      <item>Opm.: Onder deze handeling valt ook:<lb></lb>- Het voeren van overleg met andere betrokken actoren op het beleidsterrein van de (drink)watervoorziening.<lb></lb>- Het voorbereiden van een standpunt ter inbrenging in de ministerraadsvergaderingen voor beraad en besluitvorming betreffende het beleidsterrein van de (drink)watervoorziening.<lb></lb>- Het voeren van overleg met/het leveren van bijdragen aan het overleg met het staatshoofd betreffende het beleidsterrein van de (drink)watervoorziening.<lb></lb>- Het toetsen van de uitvoering van het beleid betreffende de (drink)watervoorziening (evaluatie).<lb></lb>- Het leveren van commentaar op de recht- en doelmatigheidscontroles van de Algemene Rekenkamer betreffende het beleidsterrein van de (drink)watervoorziening.<lb></lb>- Het aan een externe adviescommissie verzoeken om advies betreffende het beleidsterrein van de (drink)watervoorziening.<lb></lb>- Het informeren van het Kabinet van de Koningin over ontwikkelingen op het beleidsterrein van de (drink)watervoorziening.<lb></lb>- Het voorbereiden en vaststellen van het voorlichtingsbeleid betreffende de (drink)watervoorziening.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">01</unitid>
                      <unittitle>Samenwerking en overleg</unittitle>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63903084">312</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/47</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b9c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Notulen van periodieke vergaderingen van de ingenieurs van het RID  betreffende de taak en de organisatie.</unittitle>
                        <unitdate calendar="gregorian" normal="1926/1931" era="ce">1926-1931</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903085">310</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/39</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b9d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Interdepartementaal overleg over het te voeren regeringsbeleid inzake de drinkwatervoorziening in Nederland alsmede het tienjarenplan 1952-1962 voor de drinkwatervoorziening van Nederland.</unittitle>
                        <unitdate calendar="gregorian" normal="1941/1957" era="ce">1941-1957</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903087">2781</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b9e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Verslagen van de periodieke samenkomsten van het RID en de Vakgroep Waterleidingbedrijven.</unittitle>
                        <unitdate calendar="gregorian" normal="1943/1946" era="ce">1943-1946</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903089">2629</unitid>
                        <unitid audience="internal" type="obsolete">B1,15-72(19)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b9f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Samenwerking op het gebied van de drinkwatervoorziening met de Vereniging van Exploitanten van Waterbedrijven in Nederland, het Keuringsinstituut voor Waterleidingartikelen en de Vereniging voor Waterleidingbelangen in Nederland.</unittitle>
                        <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2822, 2890-2891</unitid>
                        <unittitle>Notulen van vergaderingen van de staf van het RID.</unittitle>
                        <unitdate calendar="gregorian" normal="1967/1977" era="ce">1967-1977</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63903091">2891</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1967/1969" era="ce">1967-1969</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903092">2890</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903093">2822</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903094">268</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/2</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het periodiek overleg tussen de Directie RID en de staatssecretaris van Sociale Zaken en Volksgezondheid, de directeur-generaal van de Volksgezondheid en de directeur-generaal van de Milieuhygiëne.</unittitle>
                        <unitdate calendar="gregorian" normal="1969/1972" era="ce">1969-1972</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Samenwerking met het Keuringsinstituut voor Waterleidingartikelen (KIWA).</unittitle>
                        <unitdate calendar="gregorian" normal="1969/1983" era="ce">1969-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63903096">271</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/6</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Directieoverleg alsmede de totstandkoming van een overeenkomst inzake een nationaal speurwerkprogramma voor de watervoorziening,<unitdate calendar="gregorian" normal="1969/1978" era="ce">1969-1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903097">293</unitid>
                          <unitid audience="internal" type="obsolete">A 13-73/24</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Overeenkomst met het KIWA met betrekking tot onderzoeken op het gebied van de openbare drink- en industriewatervoorziening,<unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903098">111</unitid>
                          <unitid audience="internal" type="obsolete">74-83/54</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903099">2962</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ba9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>RID-KIWA Commissie toxicologie,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903100">3129</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4baa-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verslagen van het overleg met betrekking tot hydrologie,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903101">2968</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bab-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Verslagen van het periodiek overleg van het RID met de Rijksdienst voor de IJsselmeerpolders (RIJP).</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Vergaderstukken van het overleg met de Vereniging van Exploitanten van Waterleidingbedrijven in Nederland (VEWIN).</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>107, 109</unitid>
                          <unittitle>Algemeen overleg.<unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63903104">107</unitid>
                            <unitid audience="internal" type="obsolete">74-83/54</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bae-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903105">109</unitid>
                            <unitid audience="internal" type="obsolete">74-83/46</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4baf-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>174-179, 2803</unitid>
                          <unittitle>Vergaderstukken van het overleg over de projecten Infiltratie Veluwe en Spaarbekken IJsselmeer.<unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63903108">2803</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903109">174</unitid>
                            <unitid audience="internal" type="obsolete">74-83/200</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903110">175</unitid>
                            <unitid audience="internal" type="obsolete">74-83/201</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903111">176</unitid>
                            <unitid audience="internal" type="obsolete">74-83/202</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903112">177</unitid>
                            <unitid audience="internal" type="obsolete">74-83/203</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903113">178</unitid>
                            <unitid audience="internal" type="obsolete">74-83/204</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903114">179</unitid>
                            <unitid audience="internal" type="obsolete">74-83/205</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903115">118</unitid>
                          <unitid audience="internal" type="obsolete">74-83/102</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken van het overleg van het Stafbureau Planning met het Planbureau van de VEWIN,<unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903116">35</unitid>
                        <unitid audience="internal" type="obsolete">74-83/50</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bb9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Verslagen van besprekingen met de Vaste Kamercommissie Milieuhygiëne.</unittitle>
                        <unitdate calendar="gregorian" normal="1974/1978" era="ce">1974-1978</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903117">116</unitid>
                        <unitid audience="internal" type="obsolete">74-83/101</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bba-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Samenwerking met het Rijksinstituut voor Zuivering van Afvalwater (RIZA).</unittitle>
                        <unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903118">2772</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bbb-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van de districtsgeohydrologen.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903119">119</unitid>
                        <unitid audience="internal" type="obsolete">74-83/46</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bbc-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Samenwerking met de Inspectie voor de Volksgezondheid inzake de relatie drinkwater en volksgezondheid.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903120">3022</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bbd-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Overleg van de Chemisch-Bacteriologische Afdeling (CBA) met de Geo-Hydrologische Afdeling (GHA).</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903122">2789</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bbe-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Overleg met de Directie Waterhuishouding en Waterbeweging van de Rijkswaterstaat inzake onderzoeken op het gebied van waterbeheer.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903123">125</unitid>
                        <unitid audience="internal" type="obsolete">74-83/107</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bbf-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Overleg met het Rijksinstituut voor Volksgezondheid inzake een betere integratie en coördinatie van de gezamenlijke onderzoeksprojecten.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1980" era="ce">1977-1980</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903124">24</unitid>
                        <unitid audience="internal" type="obsolete">74-83/27 en 28</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bc0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Mededelingen opgemaakt ten behoeve van het beleidsoverleg van het Ministerie van Volksgezondheid en Milieuhygiëne.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1981" era="ce">1977-1981</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>124, 3128</unitid>
                        <unittitle>Samenwerking met het Instituut voor Cultuurtechniek en Waterhuishouding (ICW).</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                        <physdesc>
                          <extent>1 pak en 1 omslag</extent>
                        </physdesc>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63903126">124</unitid>
                          <unitid audience="internal" type="obsolete">74-83/108</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bc2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1977/1982" era="ce">1977-1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903127">3128</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bc3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de toepassing van grondwaterkwaliteitsmodellen,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Vergaderstukken van de Instituutsraad van het RID.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                      </did>
                      <odd>
                        <p>Geordend op jaar en daarin op vergadernummer</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63903131">25</unitid>
                          <unitid audience="internal" type="obsolete">74-83/29</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bc7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Stukkenlijst,<unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903132">26</unitid>
                          <unitid audience="internal" type="obsolete">74-83/30</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bc8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>77.001-77.003,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903133">64</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/30</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bc9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>77.004-77.005,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903134">27</unitid>
                          <unitid audience="internal" type="obsolete">74-83/31</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bca-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>78.001-78.015,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903135">28</unitid>
                          <unitid audience="internal" type="obsolete">74-83/39</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bcb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>79.001-79.008,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903136">65</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/32</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bcc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>79.009-79.015,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903137">29</unitid>
                          <unitid audience="internal" type="obsolete">74-83/33</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bcd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>80.000 - 80.045,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903139">68</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/33</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>80.46 - 80.110,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903140">70</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/34</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bcf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>80.111 - 80.182,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903141">71</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/34</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>80.183 - 80.250,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903142">72</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/35</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>80.251 - 80.319,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903143">73</unitid>
                          <unitid audience="internal" type="obsolete">74-83/36</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>81.001 - 81.100,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903144">74</unitid>
                          <unitid audience="internal" type="obsolete">74-83/36</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>81.101 - 81.200,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903145">79</unitid>
                          <unitid audience="internal" type="obsolete">74-83/37</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>81.201 - 81.310,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
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                          <physdesc>
                            <extent>pak</extent>
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                        <did>
                          <unitid identifier="63903146">80</unitid>
                          <unitid audience="internal" type="obsolete">74-83/37</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>81.311 - 81.400,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
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                      <c level="file">
                        <did>
                          <unitid identifier="63903147">81</unitid>
                          <unitid audience="internal" type="obsolete">74-83/38</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>81.401 - 81.480,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903148">82</unitid>
                          <unitid audience="internal" type="obsolete">74-83/38</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>81.481 - 81.512,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903149">84</unitid>
                          <unitid audience="internal" type="obsolete">74-83/39</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>82.001 - 82.063,<unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903150">85</unitid>
                          <unitid audience="internal" type="obsolete">74-84/39</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bd9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>82.064 - 82.150,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903151">86</unitid>
                          <unitid audience="internal" type="obsolete">74-84/13</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bda-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>82.151 - 82.260,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903152">90</unitid>
                          <unitid audience="internal" type="obsolete">74-83/40</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bdb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>82.261 - 82.350,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903153">91</unitid>
                          <unitid audience="internal" type="obsolete">74-83/41</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bdc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>82.351 - 82.455,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903154">92</unitid>
                          <unitid audience="internal" type="obsolete">74-83/42</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bdd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>83.001 - 83.120,<unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903156">93</unitid>
                          <unitid audience="internal" type="obsolete">74-83/43</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bde-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>83.121 - 83.230,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903157">94</unitid>
                          <unitid audience="internal" type="obsolete">74 - 83/43</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4bdf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>83.231 - 83.300,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903158">98</unitid>
                          <unitid audience="internal" type="obsolete">74-83/44</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>83.301- 83.355,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903159">99</unitid>
                          <unitid audience="internal" type="obsolete">74-83/44</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>83.356 - 83.440,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903160">2851</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be2-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Samenwerking van het RID met de Dienst Grondwaterverkenning TNO.</unittitle>
                        <unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903161">10</unitid>
                        <unitid audience="internal" type="obsolete">74-83/9</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be3-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het overleg met het Directoraat voor Milieuhygiëne.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903162">8</unitid>
                        <unitid audience="internal" type="obsolete">74-83/10</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het overleg met de sector Drink- en Industriewatervoorziening van het Ministerie van Volksgezondheid en Milieuhygiëne.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903163">2964</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Samenwerking van het RID met het Rijksinstituut voor Natuurbeheer.</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903164">127</unitid>
                        <unitid audience="internal" type="obsolete">74-83/111</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het overleg met de Directie van het Rijksinstituut voor Volksgezondheid.</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903165">3056</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van de Werkgroep Nieuwe Taken.</unittitle>
                        <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903166">128</unitid>
                        <unitid audience="internal" type="obsolete">74-83/112</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4be8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het overleg met de Directie Limburg van de Rijkswaterstaat.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">02</unitid>
                      <unittitle>Nota's en Onderzoeksprogramma's</unittitle>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63903248">1099</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/385(728)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c37-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport Stand van de Drinkwatervoorziening in Nederland.</unittitle>
                        <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903249">299</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/32</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c38-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Nota inzake regelingen over het kwantitatieve beheer van het grondwater ter bespreking in de Werkgroep Grondwaterbeheer.</unittitle>
                        <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903250">269</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/4</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c39-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Beleidsprogramma en -adviezen op het gebied van de openbare drinkwatervoorziening.</unittitle>
                        <unitdate calendar="gregorian" normal="1962/1965" era="ce">1962-1965</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903251">1309</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/443(885)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c3a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport Drinkwatervoorziening van Nederland.</unittitle>
                        <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903252">1235</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/436(882)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c3b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport inzake het regeringsbeleid op het gebied van de openbare drinkwatervoorziening.</unittitle>
                        <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903253">270</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/5</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c3c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Leveren van een bijdrage ten behoeve van de nota Drinkwatervoorziening van de Centrale Raad voor de Volksgezondheid.</unittitle>
                        <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903254">1502</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1969-039(990)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c3d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>De toekomstige drinkwatervoorziening van Nederland.</unittitle>
                        <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903256">324</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/54</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c3e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport inzake het vijfjarenprogramma van de RID voor de jaren 1971-1975.</unittitle>
                        <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                        <physdesc>
                          <extent>deel</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903257">272</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/7</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c3f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Nota over het onderzoeksprogramma 1973 betreffende de hygiëne van het water, opgesteld in samenwerking met de hoofdinspectie van de Volksgezondheid en het Rijksinstituut voor Volksgezondheid.</unittitle>
                        <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903258">359</unitid>
                        <unitid audience="internal" type="obsolete">B1,15-72/26</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c40-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Het leveren van een bijdrage aan de Urgentienota Milieuhygiëne van het Ministerie van Volksgezondheid en Milieuhygiëne.</unittitle>
                        <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903259">1503</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1974-002(1130)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c41-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Hergebruik van afvalwater voor de openbare watervoorziening.</unittitle>
                        <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903260">3121</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c42-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Onderzoeksprogramma's met betrekking tot de waterkwaliteit.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903261">3085</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c43-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Onderzoeksprogramma RID 1981 - 1983, ter afstemming van de onderzoekswensen bij de beleidsonderdelen van het Directoraat-Generaal voor de Milieuhygiëne (DGMH).</unittitle>
                        <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">203</unitid>
                    <unittitle>Het adviseren van de minister inzake beleidszaken met betrekking tot de drink- en industriewatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Centrale Commissie voor de Drinkwatervoorziening</corpname>
                      </item>
                      <item>Grondslag: Koninklijk Besluit van 17 mei 1913, no.46.
</item>
                      <item>Opm.: De commissie bracht adviezen uit en neemt initiatieven op het gebied van:<lb></lb>- De voorziening van onrendabele gebieden.<lb></lb>- De wateronttrekking aan de bodem .<lb></lb>- De bescherming van waterwinplaatsen.<lb></lb>- Het toezicht op de bedrijven vanuit hygiënisch oogpunt.<lb></lb>- De organisatie van de openbare drinkwatervoorziening.<lb></lb>- De zuivering van het oppervlaktewater.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.12</unitid>
                      <unittitle>COMMISSIES</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.12.01</unitid>
                        <unittitle>STAATSCOMMISSIE VOOR DRINKWATERVOORZIENING</unittitle>
                      </did>
                      <odd>
                        <p>Voorloper van de Centrale Commissie voor de Drinkwatervoorziening</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63902549">487</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/021(11)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49a5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Juridisch-economische vorm van een centrale drinkwatervoorziening van de provincie Groningen uitgebracht aan het College van Gedeputeerde Staten door de Subcommissie voor Drinkwatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1913" era="ce">1913</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63902551">2145</unitid>
                          <unitid audience="internal" type="obsolete">CA2/10-13(3)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49a6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken.</unittitle>
                          <unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2146-2147</unitid>
                          <unittitle>Agenda's van ingekomen en uitgegane stukken.</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1911" era="ce">1910-1911</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902553">2146</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(4)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49a8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>deel</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902555">2147</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(5)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49a9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>deel</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2142-2143, 2151-2153</unitid>
                          <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1911" era="ce">1910-1911</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902557">2153</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(7)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ab-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1911 juni - sep.<unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902558">2152</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(7)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ac-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1911 mrt. - mei<unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902559">2151</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(7)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ad-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1911 jan. - feb.<unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902560">2143</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(6)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ae-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1910 nov. - dec.<unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902561">2142</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(6)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49af-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1910 jan. - okt.<unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63902562">2166</unitid>
                          <unitid audience="internal" type="obsolete">CA2/10-13(16)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verzoek aan het Centraal Laboratorium om ten behoeve van het staatstoezicht op de volksgezondheid een controle-onderzoek in te stellen naar de flessen waarin watermonsters worden vervoerd.</unittitle>
                          <unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63902563">2167</unitid>
                          <unitid audience="internal" type="obsolete">CA2/10-13(17)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verzoeken aan provincies, gemeenten, bedrijven en particulieren om de resultaten van grondboringen en wateronderzoeken op te sturen naar de Staatscommissie voor Drinkwatervoorziening alsmede de reacties op deze verzoeken.</unittitle>
                          <unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63902564">2157</unitid>
                          <unitid audience="internal" type="obsolete">CA2/10-13(8)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Advies van de Subcommissie ad-hoc over de voorwaarden die aan rijkssteun worden verbonden bij de stichting van waterleidingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63902565">2158</unitid>
                          <unitid audience="internal" type="obsolete">CA2/10-13(9)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Behandeling van het verzoek om advies van de minister van Binnenlandse Zaken over de verlening van een subsidie aan de gemeente Waddinxveen ten behoeve van de verbetering van de drinkwatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63902566">2181</unitid>
                          <unitid audience="internal" type="obsolete">CA2/10-13(20)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport inzake de noodzakelijkheid van een wettelijke regeling voor de wateronttrekking.</unittitle>
                          <unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Samenwerking met het Ministerie van Binnenlandse Zaken.</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1976" era="ce">1910-1976</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902569">2176</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(18)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het verstrekken van advies aan de minister van Binnenlandse Zaken over de financiële ondersteuning van de Commissie tot Stichting van Waterleidingen in Noord-West Brabant ten behoeve van de aanleg van drinkwaterleidingen aldaar,<unitdate calendar="gregorian" normal="1910/1912" era="ce">1910-1912</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902570">2180</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(19)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het verstrekken van advies aan de Burgemeester en Wethouders van de gemeente Muiden en de minister van Binnenlandse Zaken over de drinkwatervoorziening in Muiden,<unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2168-2171</unitid>
                            <unittitle>Enquête bij verschillende bedrijfstakken over de kwaliteitseisen te stellen aan op de Veluwe onttrokken water.<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902572">2168</unitid>
                              <unitid audience="internal" type="obsolete">CA2/72-77(7)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49b9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Enquête naar kwaliteitseisen gesteld door particuliere grondwateronttrekkers op de Veluwe,<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2169-2171</unitid>
                              <unittitle>Ontvangen enquêteformulieren, gerangschikt op bedrijfstak.<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63902574">2169</unitid>
                                <unitid audience="internal" type="obsolete">CA2/72-77(7)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49bb-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Dienstensector,<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63902575">2170</unitid>
                                <unitid audience="internal" type="obsolete">CA2/72-77(7)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49bc-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Papier en Grafische Industrie,<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63902576">2171</unitid>
                                <unitid audience="internal" type="obsolete">CA2/72-77(7)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49bd-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Voedings- en Genotmiddelen Industrie,<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902577">2162</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(12)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49be-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het verstrekken van advies aan de minister van Binnenlandse Zaken om financiële steun te verlenen aan de gemeenten IJsselstein, Vreeswijk en Jutphaas voor de aanleg van een waterleiding,<unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902578">2161</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(11)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49bf-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het verstrekken van advies aan de minister van Binnenlandse Zaken over het toekennen van subsidie aan de gemeente Barendrecht voor het stichten van een bronwaterleiding,<unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902579">2165</unitid>
                            <unitid audience="internal" type="obsolete">CA2/10-13(15)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49c0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het verstrekken van een advies aan de minister van Binnenlandse Zaken over de financiële ondersteuning van de drinkwatervoorziening in Purmerend en omgeving,<unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.12.02</unitid>
                        <unittitle>CENTRALE COMMISSIE VOOR DRINKWATERVOORZIENING</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Algemeen.</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902582">1949</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(2)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49c3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Jaarverslagen,<unitdate calendar="gregorian" normal="1913/1951" era="ce">1913-1951</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                          <odd>
                            <p>1934, 1936, 1937, 1943 - 1946 niet aanwezig</p>
                          </odd>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902585">2043</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(61)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49c6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vaststelling van de begrotingen over de jaren 1914 - 1967,<unitdate calendar="gregorian" normal="1914/1967" era="ce">1914-1967</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>1938, 1950, 1958 en 1966 niet aanwezig</p>
                          </odd>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902589">2042</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(60)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49c9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Notulen van de vergadering op 24 maart 1922 van het Dagelijks Bestuur,<unitdate calendar="gregorian" normal="1922" era="ce">1922</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902590">1100</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/385(729)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ca-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De drinkwatervoorziening in Nederland, de waterbehoeften,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902591">2047</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(65)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49cb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gecombineerde vergaderingen met de Raad voor de Drinkwatervoorziening,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1950-2038</unitid>
                          <unittitle>Neerslag van de vergaderingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1913/1973" era="ce">1913-1973</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2036-2038</unitid>
                            <unittitle>Agenda's van ingekomen en uitgegane stukken, 1919 - 1973.<unitdate calendar="gregorian" normal="1919/1973" era="ce">1919-1973</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>1947 - 1967 niet aanwezig</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63902596">2036</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(57)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1919/1924" era="ce">1919-1924</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>deel</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902597">2037</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(58)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1925/1946" era="ce">1925-1946</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>deel</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902598">2038</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(59)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1968/1973" era="ce">1968-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>deel</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1950-2035</unitid>
                            <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1913/1973" era="ce">1913-1973</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>Op nummer geordend</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63902602">1950</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(3)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>001,<unitdate calendar="gregorian" normal="1913" era="ce">1913</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902603">1951</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(3)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>002 en 003,<unitdate calendar="gregorian" normal="1914" era="ce">1914</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902604">1952</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(4)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>004,<unitdate calendar="gregorian" normal="1914" era="ce">1914</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902605">1953</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(4)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49d9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>005 - 007,<unitdate calendar="gregorian" normal="1914" era="ce">1914</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902606">1954</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(5)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49da-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>008 en 009,<unitdate calendar="gregorian" normal="1915" era="ce">1915</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902607">1955</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(5)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49db-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>010,<unitdate calendar="gregorian" normal="1915" era="ce">1915</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902608">1956</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(6)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49dc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>011,<unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902609">1957</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(6)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49dd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>012,<unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902611">1958</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(7)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49de-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>013 - 015,<unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902612">1959</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(7)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49df-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>016 - 018,<unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902613">1960</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(9)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>019 en 020,<unitdate calendar="gregorian" normal="1917/1918" era="ce">1917-1918</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902614">1961</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(9)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>021 en 022,<unitdate calendar="gregorian" normal="1918" era="ce">1918</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902615">1962</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(10)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>023 - 026,<unitdate calendar="gregorian" normal="1918/1919" era="ce">1918-1919</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902616">1963</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(10)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>027 - 029,<unitdate calendar="gregorian" normal="1919/1920" era="ce">1919-1920</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902617">1964</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(11)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>030 - 033,<unitdate calendar="gregorian" normal="1920" era="ce">1920</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902618">1965</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(12)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>034,<unitdate calendar="gregorian" normal="1920" era="ce">1920</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902619">1966</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(13)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>035 - 037,<unitdate calendar="gregorian" normal="1921" era="ce">1921</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902620">1967</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(13)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>038 - 041,<unitdate calendar="gregorian" normal="1921/1922" era="ce">1921-1922</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902621">1968</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(14)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>042 - 045,<unitdate calendar="gregorian" normal="1922/1923" era="ce">1922-1923</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902622">1969</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(14)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49e9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>046 - 048,<unitdate calendar="gregorian" normal="1923" era="ce">1923</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902623">1970</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(15)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ea-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>049 - 051,<unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902624">1971</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(16)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49eb-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>052 en 053,<unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902625">1972</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(17)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ec-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>054 en 055,<unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902626">1973</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(18)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ed-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>056,<unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902627">1974</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(18)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ee-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>057 - 059,<unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902629">1975</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(19)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ef-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>060 en 061,<unitdate calendar="gregorian" normal="1926/1927" era="ce">1926-1927</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902630">1976</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(20)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>062 en 063,<unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902631">1977</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(21)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>064 en 065,<unitdate calendar="gregorian" normal="1927/1928" era="ce">1927-1928</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902632">1978</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(21)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>066 en 067,<unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902633">1979</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(22)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>068 en 069,<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902634">1980</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(23)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>070,<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902635">1981</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(23)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>071 en 072,<unitdate calendar="gregorian" normal="1929/1930" era="ce">1929-1930</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902636">1982</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(24)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>073,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902637">1983</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(25)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>074,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902638">1984</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(26)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>075,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902639">1985</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(26)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49f9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>076,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902640">1986</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(26)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49fa-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>077,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902641">1987</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(27)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49fb-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>078,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902642">1988</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(27)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49fc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>079 en 080,<unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902643">1989</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(28)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49fd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>081,<unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902644">1990</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(29)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49fe-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>082 en 083,<unitdate calendar="gregorian" normal="1932/1933" era="ce">1932-1933</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902645">1991</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(29)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-49ff-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>084 en 085,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902647">1992</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(30)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a00-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>086 en 087,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902648">1993</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(31)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a01-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>088,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902649">1994</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(31)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a02-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>089 en 090,<unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902650">1995</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(32)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a03-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>091,<unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902651">1996</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(33)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a04-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>092 en 093,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902652">1997</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(33)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a05-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>094,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902653">1998</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(34)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a06-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>095,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902654">1999</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(34)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a07-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>096,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902655">2000</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(34)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a08-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>097 - 100,<unitdate calendar="gregorian" normal="1937/1938" era="ce">1937-1938</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902656">2001</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-38(35)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a09-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>101,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902657">2002</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(35)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a0a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>102 en 103,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902658">2003</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(36)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a0b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>104,<unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902659">2004</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(37)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a0c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>105 en 106,<unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902660">2005</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(38)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a0d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>107,<unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902661">2006</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(39)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a0e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>108 en 109,<unitdate calendar="gregorian" normal="1940/1941" era="ce">1940-1941</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902662">2007</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(39)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a0f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>110,<unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902663">2008</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(39)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a10-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>111 - 113,<unitdate calendar="gregorian" normal="1941/1942" era="ce">1941-1942</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902665">2009</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(40)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a11-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>114 - 117,<unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902666">2010</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(41)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a12-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>118,<unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902667">2011</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(41)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a13-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>119,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902668">2012</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(42)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a14-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>120 en 121,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902669">2013</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(43)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a15-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>122 - 124,<unitdate calendar="gregorian" normal="1947/1948" era="ce">1947-1948</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902670">2014</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(43)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a16-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>125,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902671">2015</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(43)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a17-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>126 - 128,<unitdate calendar="gregorian" normal="1949/1950" era="ce">1949-1950</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902672">2016</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(44)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a18-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>129 - 131,<unitdate calendar="gregorian" normal="1950/1951" era="ce">1950-1951</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902673">2017</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(44)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a19-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>132 - 134,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902674">2018</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(45)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a1a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>135 - 137,<unitdate calendar="gregorian" normal="1953/1954" era="ce">1953-1954</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902675">2019</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(46)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a1b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>138 - 140,<unitdate calendar="gregorian" normal="1955/1956" era="ce">1955-1956</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902676">2020</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(47)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a1c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>141 - 147,<unitdate calendar="gregorian" normal="1956/1958" era="ce">1956-1958</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902677">2021</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(47)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a1d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>148 - 151,<unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902678">2022</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(48)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a1e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>152 - 154,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902679">2023</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(49)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a1f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>155 - 156,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902680">2024</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(49)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a20-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>157 - 159,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902681">2025</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(50)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a21-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>160 - 162,<unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902683">2026</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(51)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a22-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>163 - 165,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902684">2027</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(51)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a23-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>166,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902685">2028</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(52)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a24-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>167 - 170,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902686">2029</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(52)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a25-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>171 - 174,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902687">2030</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(53)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a26-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>175 - 177,<unitdate calendar="gregorian" normal="1964/1965" era="ce">1964-1965</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902688">2031</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(53)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a27-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>178,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902689">2032</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(54)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a28-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>179 - 184,<unitdate calendar="gregorian" normal="1966/1968" era="ce">1966-1968</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902690">2033</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(54)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a29-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>185 - 188,<unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902691">2034</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(56)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a2a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>189 - 193,<unitdate calendar="gregorian" normal="1969/1971" era="ce">1969-1971</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902692">2035</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(56)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a2b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>194 - 198,<unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Nota's.</unittitle>
                          <unitdate calendar="gregorian" normal="1961/1967" era="ce">1961-1967</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902694">2044</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(62)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a2d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De huidige en toekomstige hoofdelijke en totale verbruiken met betrekking tot de drinkwatervoorziening in Nederland, door ir. A.M Huisman, met bijlagen,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Drinkwatervoorziening in Nederland.<unitdate calendar="gregorian" normal="1961/1963" era="ce">1961-1963</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902696">1101</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/385(730)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a2f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Tweede nota over de structuur der<lb></lb>Nederlandse waterverbruiken,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902697">1102</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/385(731)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a30-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De toekomstige Nederlandse waterverbruiken,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902698">1104</unitid>
                              <unitid audience="internal" type="obsolete">R19-83,1962-001(732)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a31-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vierde nota De watervoorraad in een veranderend IJsselmeer,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902700">1186</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1963-001</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a32-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De Watervoorziening in het gebied der Benedenrivieren,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902701">2046</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(64)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a33-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De wenselijkheid van een wettelijke regeling voor het onttrekken van water aan oppervlaktewateren, met geleidebrief,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Rapporten.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1967" era="ce">1963-1967</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902703">1742</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1964-001(856)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a35-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De drinkwatervoorziening in Nederland: Voorzieningsbronnen opgesteld door Ir. A.M. Huisman,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1232-1234</unitid>
                            <unittitle>De toekomstige drinkwatervoorziening van Nederland.<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902705">1232</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/385(879)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a37-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deel 1; waterbehoeften,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902706">1233</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/385(880)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a38-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deel 2; het beschikbare water,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902707">1234</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/385(881)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a39-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deel 3; Voorzieningen op bestuurlijk gebied,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902708">2045</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(63)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a3a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De toekomstige drinkwatervoorziening van Nederland,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.12.03</unitid>
                        <unittitle>SUBCOMMISSIES EN WERKGROEPEN</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.1</unitid>
                          <unittitle>Subcommissie ingesteld in de vergadering van 5 maart 1920 met als taak het onderzoeken van de regels voor buitengewone steun aan waterleidingondernemingen</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902711">2053</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(66)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a3d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Notulen en rapporten.</unittitle>
                            <unitdate calendar="gregorian" normal="1920" era="ce">1920</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.2</unitid>
                          <unittitle>Subcommissie Struma</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902713">2056</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(67)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a3f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De bevordering van het onderzoek naar het verband tussen drinkwater en struma (schildkliervergroting).</unittitle>
                            <unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.3</unitid>
                          <unittitle>Subcommissies I en II, ingesteld in de vergadering van 25 maart 1925</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902715">2063</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(68)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a41-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Subcommissie I - wettelijke regeling inzake waterleidingen.</unittitle>
                            <unitdate calendar="gregorian" normal="1925/1929" era="ce">1925-1929</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902716">2064</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(69)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a42-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Subcommissie II - Wetsontwerp tot regeling van de wateronttrekking aan de bodem en de bescherming van waterwinplaatsen.</unittitle>
                            <unitdate calendar="gregorian" normal="1925/1927" era="ce">1925-1927</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.4</unitid>
                          <unittitle>Subcommissie Haarlem</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902719">2081</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(73)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a44-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advisering inzake onteigening van duinterrein ten behoeve van de gemeente Haarlem.</unittitle>
                            <unitdate calendar="gregorian" normal="1927/1928" era="ce">1927-1928</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.5</unitid>
                          <unittitle>Subcommissie Veluwe</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902721">2083</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(74)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a46-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advisering inzake de wateronttrekking aan de Veluwe ten behoeve van de drinkwatervoorziening van Amsterdam.</unittitle>
                            <unitdate calendar="gregorian" normal="1927/1929" era="ce">1927-1929</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.6</unitid>
                          <unittitle>Subcommissie Drinkwatervoorziening Westen des Lands en de daaronder ressorterende subcommissies</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2091-2093, 3275-3276</unitid>
                            <unittitle>Vergaderstukken.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1939" era="ce">1931-1939</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902724">2091</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(77)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a49-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nrs. 001 - 004,<unitdate calendar="gregorian" normal="1931/1936" era="ce">1931-1936</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="79348238">3276</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/f20cd824-6b50-f54f-e053-6df0900a2f02</unitid>
                              <unittitle>Bijlagen Q.2 bij vergadering nr. 4, <unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                              </unittitle>
                            </did>
                            <acqinfo>
                              <p>Schenking Noord-Hollands Archief 2022</p>
                            </acqinfo>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902725">2092</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(78)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a4a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nrs. 005 - 008,<unitdate calendar="gregorian" normal="1937/1938" era="ce">1937-1938</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="79348237">3275</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/f20cd824-6b4f-f54f-e053-6df0900a2f02</unitid>
                              <unittitle>Bijlagen C, E en F bij vergadering nr. 6, <unitdate calendar="gregorian" normal="19370430" era="ce">1937 april 30</unitdate>
                              </unittitle>
                              <physdesc>omslag</physdesc>
                            </did>
                            <acqinfo>
                              <p>Schenking Noord-Hollands Archief 2022</p>
                            </acqinfo>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902726">2093</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(78)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a4b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nrs. 009 - 011,<unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902727">776</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/137(332)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a4c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rapport van de commissie Drinkwatervoorziening Westen des Lands.</unittitle>
                            <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902728">2101</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(86)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a4d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Subcommissie Bestuur.</unittitle>
                            <unitdate calendar="gregorian" normal="1933/1937" era="ce">1933-1937</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63902729">2100</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(85)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a4e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Subcommissie Contact.</unittitle>
                            <unitdate calendar="gregorian" normal="1932/1938" era="ce">1932-1938</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>705, 2095</unitid>
                            <unittitle>Subcommissie Duinen.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1938" era="ce">1931-1938</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902731">2095</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(80)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a50-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1931/1938" era="ce">1931-1938</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902732">705</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/137(279)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a51-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>697, 2096</unitid>
                            <unittitle>Subcommissie Grote Rivieren.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1937" era="ce">1931-1937</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902735">2096</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(81)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a53-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1931/1936" era="ce">1931-1936</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902736">697</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/137(273)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a54-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>698, 2097-2099</unitid>
                            <unittitle>Subcommissie IJsselmeer.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1937" era="ce">1931-1937</unitdate>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2097-2099</unitid>
                              <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1931/1937" era="ce">1931-1937</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63902739">2097</unitid>
                                <unitid audience="internal" type="obsolete">CA2/13-83(82)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a57-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nrs. 001 - 007,<unitdate calendar="gregorian" normal="1931/1933" era="ce">1931-1933</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63902740">2098</unitid>
                                <unitid audience="internal" type="obsolete">CA2/13-83(83)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a58-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nrs. 008 - 012,<unitdate calendar="gregorian" normal="1934/1935" era="ce">1934-1935</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63902741">2099</unitid>
                                <unitid audience="internal" type="obsolete">CA2/13-83(84)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a59-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nrs. 013 - 017,<unitdate calendar="gregorian" normal="1936/1937" era="ce">1936-1937</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902742">698</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/137(274)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a5a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2106-2107</unitid>
                            <unittitle>Subcommissie Redactie.</unittitle>
                            <unitdate calendar="gregorian" normal="1938/1940" era="ce">1938-1940</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902744">2106</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(87)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a5c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nrs. 001 - 007,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902745">2107</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(87)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a5d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nrs. 008 - 021,<unitdate calendar="gregorian" normal="1938/1940" era="ce">1938-1940</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>661, 2094</unitid>
                            <unittitle>Subcommissie Statistiek.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1936" era="ce">1931-1936</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902747">2094</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(79)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a5f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1931/1936" era="ce">1931-1936</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902748">661</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/137(234)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a60-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport met statistische gegevens betreffende de in het westen des lands gelegen waterleidingbedrijven ten aanzien van de in het verleden afgeleverde hoeveelheden water,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.7</unitid>
                          <unittitle>Subcommissie Amsterdam</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902750">2087</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(76)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a62-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advisering inzake de drinkwatervoorziening van Amsterdam.</unittitle>
                            <unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.8</unitid>
                          <unittitle>Subcommissie Wetgeving</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902753">2112</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(88)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a64-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advisering met betrekking tot de wetgeving op het gebied van de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1941/1952" era="ce">1941-1952</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Vergaderstukken.</unittitle>
                            <unitdate calendar="gregorian" normal="1941/1954" era="ce">1941-1954</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902755">2113</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(89)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a66-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1941/1943" era="ce">1941-1943</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902756">2119</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(89)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a67-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1944/1949" era="ce">1944-1949</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902757">2121</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(89)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a68-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1950/1954" era="ce">1950-1954</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.9</unitid>
                          <unittitle>Subcommissie Eemmeer en de daaronder ressorterende subcommissies</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2135-2140</unitid>
                            <unittitle>Onderzoek naar de mogelijke drinkwatervoorziening voor het westen van Nederland middels wateronttrekking aan het Eemmeer.</unittitle>
                            <unitdate calendar="gregorian" normal="1942/1950" era="ce">1942-1950</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63902760">2135</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(90)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a6b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1942/1950" era="ce">1942-1950</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902761">2136</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(91)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a6c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Analyses van watermonsters van de rivier de Eem,<unitdate calendar="gregorian" normal="1944/1950" era="ce">1944-1950</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902762">2137</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(92)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a6d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken van de Subcommissie Statistiek,<unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902763">2138</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(93)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a6e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken van de Subcommissie IJsselmeer,<unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902764">2139</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(94)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a6f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken van de Subcommissie Koppeling,<unitdate calendar="gregorian" normal="1944/1946" era="ce">1944-1946</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63902765">2140</unitid>
                              <unitid audience="internal" type="obsolete">CA2/13-83(95)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a70-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken van de Subcommissie Bruikbaarheid,<unitdate calendar="gregorian" normal="1944/1950" era="ce">1944-1950</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.12.03.10</unitid>
                          <unittitle>Werkgroep Watervoorziening</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63902767">2141</unitid>
                            <unitid audience="internal" type="obsolete">CA2/13-83(96)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4a72-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vergaderstukken.</unittitle>
                            <unitdate calendar="gregorian" normal="1961/1964" era="ce">1961-1964</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">207</unitid>
                    <unittitle>Het adviseren van de minister, uit eigen beweging of op diens verzoek, omtrent onderwerpen betrekking hebbende op of in verband staande met de drinkwater- en industriewatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Raad voor de Drinkwatervoorziening</corpname>
                      </item>
                      <item>Grondslag: Waterleidingwet, art. 2, lid 1 en 2.
</item>
                      <item>Opm.: De Raad en de door de Raad ingestelde commissies kunnen zich doen bijstaan door deskundigen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2122-2126, 2969-2970</unitid>
                      <unittitle>Raad voor de Drinkwatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1957/1973" era="ce">1957-1973</unitdate>
                    </did>
                    <odd>
                      <p>Ingesteld bij hoofdstuk I van de Waterleidingwet bij KB van 12-12-1957; opgevolgd door de Commissie Drinkwatervoorziening bij Wet van 13-10-1994.</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63903015">2126</unitid>
                        <unitid audience="internal" type="obsolete">CA2/58-73(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b5a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Agenda's van ingekomen en uitgegane stukken,<unitdate calendar="gregorian" normal="1958/1973" era="ce">1958-1973</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2122-2125</unitid>
                        <unittitle>Ingekomen en uitgegane stukken.<unitdate calendar="gregorian" normal="1958/1972" era="ce">1958-1972</unitdate>
                        </unittitle>
                      </did>
                      <odd>
                        <p>Met hiaten</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63903020">2122</unitid>
                          <unitid audience="internal" type="obsolete">CA2/58-73(1)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b5e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903021">2123</unitid>
                          <unitid audience="internal" type="obsolete">CA2/58-73(2)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b5f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1960/1962" era="ce">1960-1962</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903022">2124</unitid>
                          <unitid audience="internal" type="obsolete">CA2/58-73(3)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b60-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1963/1966" era="ce">1963-1966</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903023">2125</unitid>
                          <unitid audience="internal" type="obsolete">CA2/58-73(3)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b61-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1967/1972" era="ce">1967-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2969-2970</unitid>
                        <unittitle>Correspondentie.<unitdate calendar="gregorian" normal="1957/1973" era="ce">1957-1973</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63903025">2969</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b63-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1957/1963" era="ce">1957-1963</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903026">2970</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b64-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1964/1973" era="ce">1964-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903027">2784</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b65-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Reorganisatieplan Drinkwatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="65486103">13</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/857327d3-fa4d-5cc5-e053-09f0900a2b1a</unitid>
                      <unittitle>Beantwoorden van Kamervragen</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">213</unitid>
                    <unittitle>Het adviseren van de minister van Volkshuisvesting Ruimtelijke Ordening en Milieubeheer en Verkeer en Waterstaat met betrekking tot de (verdere) ontwikkeling van plannen voor een spaarbekken in het IJsselmeer ten behoeve van de openbare drinkwatervoorziening, alsmede met betrekking tot deelplannen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie Spaarbekken IJsselmeer (VW)</corpname>
                      </item>
                      <item>Grondslag: Instellingsbeschikking Commissie Spaarbekken IJsselmeer (Stcrt. 1975, 52), p. 3.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Commissie Spaarbekken IJsselmeer.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1982" era="ce">1973-1982</unitdate>
                    </did>
                    <odd>
                      <p>Ingesteld door de ministers van Volksgezondheid, Milieuhygiëne en Verkeer en Waterstaat op 17-02-1975; opheffing onbekend</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63903037">2182</unitid>
                        <unitid audience="internal" type="obsolete">CA2/73-83(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b6f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Instelling en samenstelling,<unitdate calendar="gregorian" normal="1973/1982" era="ce">1973-1982</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2215-2220, 2934</unitid>
                        <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63903039">2215</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(16)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b71-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903040">2934</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(17)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b72-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903041">2216</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(18)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b73-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1977 jan.-aug.<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903042">2217</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(18)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b74-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1977 okt.-dec.<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903043">2218</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(19)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b75-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903044">2219</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(20)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b76-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903045">2220</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(21)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b77-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2223, 2945</unitid>
                      <unittitle>Vergaderstukken van de Stuurgroep Commissie Spaarbekken IJsselmeer.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1980" era="ce">1976-1980</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63903047">2223</unitid>
                        <unitid audience="internal" type="obsolete">CA2/73-83(22)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b79-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903049">2945</unitid>
                        <unitid audience="internal" type="obsolete">CA2/73-83(22)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b7a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Technische Werkgroep Spaarbekken IJsselmeer.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                    </did>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                        </unittitle>
                      </did>
                      <odd>
                        <p>Op stuknummer ingedeeld</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63903054">2189</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(8)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b7f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nrs. 01 - 25,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903055">2190</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(9)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b80-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nrs. 26 - 40,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903056">2192</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(10)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b81-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nrs. 41 - 60,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903057">2193</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(11)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b82-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nrs. 61 - 75,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903058">2208</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(13)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b83-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nrs. 77 - 80,<unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903059">2207</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b84-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nr. 81,<unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903060">2209</unitid>
                          <unitid audience="internal" type="obsolete">CA2/73-83(14)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b85-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nrs. 82 - 100,<unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903061">3060</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b86-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Kwantitatieve waterhuishoudkundige verkenningen,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903062">2211</unitid>
                        <unitid audience="internal" type="obsolete">CA2/73-83(15)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b87-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Deelrapport van de ad-hoc Werkgroep 2B over de waterkwaliteit in spaarbekkens,<unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903063">2183</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(4)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b88-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het onderzoeken van de mogelijkheden om met behulp van flotatie algen en fosfaten uit het IJsselmeerwater te verwijderen.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903064">2184</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(5)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b89-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Ecologische aspecten bij de aanleg van een spaarbekken in het IJsselmeergebied.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903065">2185</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(6)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b8a-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Recreatieve aspecten bij de aanleg van een spaarbekken in het IJsselmeergebied.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903067">2186</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(7)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b8b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Algemene aspecten bij de aanleg van een spaarbekken in het IJsselmeergebied.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1979" era="ce">1975-1979</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2187-2188</unitid>
                      <unittitle>Documentatie naar aanleiding van verzoeken om informatie aangaande onderzoeken door diensten, commissies op het gebied van de waterhuishouding.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                    </did>
                    <odd>
                      <p>Niet nader onder te verdelen</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63903071">2187</unitid>
                        <unitid audience="internal" type="obsolete">CA2/73-83(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b8f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Deel I,<unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63903072">2188</unitid>
                        <unitid audience="internal" type="obsolete">CA2/73-83(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b90-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Deel II,<unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903073">2226</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(23)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b91-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Landschapsaspecten van de aanleg van een spaarbekken in het IJsselmeergebied.</unittitle>
                      <unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903074">2228</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(25)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b92-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Redactiegroep Commissie Spaarbekken IJsselmeer.</unittitle>
                      <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903075">2227</unitid>
                      <unitid audience="internal" type="obsolete">CA2/73-83(24)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4b93-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Eindrapport van de Commissie Spaarbekken IJsselmeer.</unittitle>
                      <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">755</unitid>
                    <unittitle>Het ondersteunen van regionale initiatieven om tot een openbare drinkwatervoorziening te komen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Bewerkingsplan Archief Rijksinstituut Drinkwatervoorziening, Ministerie van Volksgezondheid, Welzijn en Sport, CDBFO/DIV, april 1995.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.11</unitid>
                      <unittitle>ONDERSTEUNING REGIONALE INITIATIEVEN INZAKE OPENBARE DRINKWATERVOORZIENING</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.11.02</unitid>
                        <unittitle>Algemeen</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63903284">491</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/021(18)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c5a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nadere beschouwingen over de drinkwaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1914" era="ce">1914</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903285">494</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/016(20)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c5b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Centrale drinkwatervoorziening in Zuid-Holland, Noord-Holland en Utrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1915" era="ce">1915</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903286">544</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/108(73)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c5c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Plan voor een drinkwaterleiding voor 51 gemeenten van Noord- en Midden-Limburg benevens 14 gemeenten van Noord-Brabant.</unittitle>
                          <unitdate calendar="gregorian" normal="1923/1925" era="ce">1923-1925</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903287">774</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/194(330)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c5d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake de drinkwatervoorziening van onrendabele gebieden.</unittitle>
                          <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903288">787</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/194(346)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c5e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Drinkwatervoorziening onrendabele gebieden in Drenthe en Overijssel.</unittitle>
                          <unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903289">1453</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(964)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c5f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake de drinkbehoefte van Zuid-Nederland en raming van de aanspraken op Maaswater ten behoeve van de drinkwatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63903290">120</unitid>
                          <unitid audience="internal" type="obsolete">74-83/95</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c60-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het organiseren van regionaal overleg in Midden-Nederland ten behoeve van de organisatie en de technische opbouw van de drinkwatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.11.01</unitid>
                        <unittitle>PROVINCIES</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.11.01.1</unitid>
                          <unittitle>Groningen</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63903294">486</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/021(10)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c63-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advies uitgebracht aan het College van Gedeputeerde Staten inzake de centrale drinkwatervoorziening in de provincie Groningen.</unittitle>
                            <unitdate calendar="gregorian" normal="1913" era="ce">1913</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903295">955</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/073(496)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c64-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De Punt, ontwikkeling pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903296">360</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/27</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c65-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Veendam, advisering inzake de uitbreiding van het waterleidingnet.</unittitle>
                            <unitdate calendar="gregorian" normal="1951/1952" era="ce">1951-1952</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903297">956</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/274(497)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c66-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Winschoten, gemeente; uitbreiding en verbetering van de drinkwaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.11.01.2</unitid>
                          <unittitle>Friesland</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Algemeen.</unittitle>
                            <unitdate calendar="gregorian" normal="1919/1931" era="ce">1919-1931</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63903300">508</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/092(36)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c69-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Provinciale drinkwatervoorziening,<unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903301">527</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/092(58)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c6a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Leeuwarden, Franeker en Harlingen, gemeenten; centrale drinkwatervoorziening voor de gemeenten alsmede voor enkele dorpen,<unitdate calendar="gregorian" normal="1921" era="ce">1921</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903302">631</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/087(169)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c6b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Lemsterland, Doniawerstal en Weststellingwerf, gemeenten; drinkwatervoorziening,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903356">1473</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/028(1117)</unitid>
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                            <did>
                              <unitid identifier="63903357">583</unitid>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903358">785</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(353)</unitid>
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                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63903360">586</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/057(98)</unitid>
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                                  <unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903361">1007</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/057(502)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ca4-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
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                            <c level="file">
                              <did>
                                <unitid identifier="63903363">502</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/001(30)</unitid>
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                                  <unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
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                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903364">577</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/001(97)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ca7-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903365">712</unitid>
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                          <c otherlevel="filegrp" level="otherlevel">
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                            <c level="file">
                              <did>
                                <unitid identifier="65486090">798</unitid>
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                                  <unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903366">652</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/091(181)</unitid>
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                                  <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
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                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903367">538</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/099(68)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4caa-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Lochem,<unitdate calendar="gregorian" normal="1923" era="ce">1923</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903368">563</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/056(87)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cab-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Lunteren,<unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903369">549</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/006(77)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cac-79fa-e053-09f0900a5ea8</unitid>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903370">529</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/009(60)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cad-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nijmegen,<unitdate calendar="gregorian" normal="1921" era="ce">1921</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903371">639</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/03(174)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cae-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rheden,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903372">365</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/32</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4caf-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rozendaal,<unitdate calendar="gregorian" normal="1947/1952" era="ce">1947-1952</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903373">1197</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/417(836)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cb0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Winterswijk,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903375">614</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/086(160)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cb1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Zaltbommel,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903376">559</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/017(85)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cb2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Zutphen,<unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903378">582</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/072(145)</unitid>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903379">669</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/109(239)</unitid>
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                              <unittitle>Ermelo, Groot Emaus,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903380">560</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/058(129)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cb6-79fa-e053-09f0900a5ea8</unitid>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903381">844</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/235(431)</unitid>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903382">948</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/325(590)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cb8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oosterbeek en Wolfheze  (met 8 bijlagen).</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                            <unitid>512, 747</unitid>
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                            <unitdate calendar="gregorian" normal="1919/1945" era="ce">1919-1945</unitdate>
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                            <did>
                              <unitid identifier="63903384">512</unitid>
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                              <unittitle>Globaal overzichtsplan,<unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
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                            <did>
                              <unitid identifier="63903385">747</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/035(388)</unitid>
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                              <unittitle>Nota inzake een rationele drinkwatervoorziening,<unitdate calendar="gregorian" normal="1945" era="ce">1945</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903388">642</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/042(175)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cbe-79fa-e053-09f0900a5ea8</unitid>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903389">1754</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/042(8)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cbf-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Advies,<unitdate calendar="gregorian" normal="1904/1917" era="ce">1904-1917</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903390">497</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/042(24)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc0-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Plannen,<unitdate calendar="gregorian" normal="1915/1916" era="ce">1915-1916</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903391">513</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/042(41)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc1-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Rapport,<unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903392">651</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/049(180)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Over-Betuwe,<unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903394">828</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(378)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Westelijk Gelderland benoorden de Waal,<unitdate calendar="gregorian" normal="1939/1944" era="ce">1939-1944</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903395">818</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/194(371)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onrendabele gebieden, werkplan 1942-43,<unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903396">1196</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/042(835)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Grondwaterleiding ten zuiden van Haarlo,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                        </c>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903398">550</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/042(78)</unitid>
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                              <unittitle>Doetinchem, Gendringen, Wisch, Lichtenvoorde, Groenlo, Eibergen en Haaksbergen,<unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903399">587</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/042(99)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Eibergen, Groenlo, Haaksbergen en Neede,<unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903400">769</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/195(324)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cc9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Lienden, Echteld en Kesteren,<unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903401">522</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/034(52)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cca-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rheden en Brummen,<unitdate calendar="gregorian" normal="1920" era="ce">1920</unitdate>
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                            </did>
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                        </c>
                      </c>
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                        <did>
                          <unitid type="series_code">1.11.01.6</unitid>
                          <unittitle>Utrecht</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63903403">1525</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/019(1005)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ccc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Amersfoort, Hoogland, Stoutenburg, Leusden en Bunschoten, gemeenten; nota inzake de toekomstige drinkwatervoorziening.</unittitle>
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                            <did>
                              <unitid identifier="63903407">488</unitid>
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                              </unittitle>
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                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903408">366</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/33</unitid>
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                            <unittitle>Leusden en Stoutenburg, gemeenten; bemoeiingen met de watervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1947/1955" era="ce">1947-1955</unitdate>
                          </did>
                        </c>
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                          <did>
                            <unitid identifier="63903409">1310</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/425(861)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cd2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Leusder Heide, watervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                          </did>
                        </c>
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                          <did>
                            <unitid identifier="63903410">975</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/283(506)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cd3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Maarssen, gemeente; nota inzake de toekomstige ontwikkeling van de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903412">982</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/338(615)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cd4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Utrecht, gemeente; advies inzake de administratieve problemen rondom de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903413">884</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/110(451)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cd5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vlietstreek, De; verbetering van de drinkwatervoorziening in het gebied van de drinkwaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
                          </did>
                        </c>
                      </c>
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                        </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903416">758</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/243(401)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cd8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rationele uitbreiding,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903417">784</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/243(341)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cd9-79fa-e053-09f0900a5ea8</unitid>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903418">857</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/243(437)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cda-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapporten 1948,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903419">483</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/002(5)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cdb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bloemendaal, gemeente; watervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1911" era="ce">1911</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903420">367</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/35</unitid>
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                            <unittitle>Heemstede, gemeente; bemoeiingen met de watervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1929/1954" era="ce">1929-1954</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1194-1195</unitid>
                            <unittitle>Den Helder.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63903423">1195</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/418(843)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cde-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verbetering van de watervoorziening van het marinecomplex aan de buitenhaven,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903424">1194</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/416(842)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cdf-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Watervoorziening van de op het nieuwe haventerrein te bouwen marinekazerne,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903425">589</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/134(101)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ce0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hillegom, verbetering van de hoedanigheid van het water der waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>904, 992</unitid>
                            <unittitle>Lisse, Hillegom, Sassenheim en Warmond, gemeenten; de verbetering van de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1950/1956" era="ce">1950-1956</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63903427">904</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/134(468)</unitid>
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                                <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903428">992</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/134(623)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ce3-79fa-e053-09f0900a5ea8</unitid>
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                                <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>501, 917-918</unitid>
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                            <unitdate calendar="gregorian" normal="1917/1954" era="ce">1917-1954</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903430">501</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/074(28)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ce5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Grondwater- en bodemonderzoek ter opsporing van een geschikte waterwinplaats voor een centrale drinkwatervoorziening,<unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903431">918</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/074(569)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ce6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport Drinkwatervoorziening,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903432">917</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/137(568)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4ce7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterwinning De Koog,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63903433">368</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/36</unitid>
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                            <unittitle>Wieringermeer, het verstrekken van advies aan de Stichting Joodse Arbeid over de watervoorziening van het werkdorp Nieuwesluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                          </did>
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                          <did>
                            <unitid identifier="63903434">845</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/226(432)</unitid>
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                            <unittitle>Zandvoort, gemeente; herstel en de uitbreiding van de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1947/1948" era="ce">1947-1948</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903439">829</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/225(420)</unitid>
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                                <unitid identifier="63903441">500</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/096(27)</unitid>
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                                  <unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
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                            <c level="file">
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                                <unitid identifier="63903442">514</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/096(42)</unitid>
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                                  <unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903443">764</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/096(319)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cf1-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                                </unittitle>
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                              <unitid>100-103, 3094</unitid>
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                              <did>
                                <unitid identifier="63903445">100</unitid>
                                <unitid audience="internal" type="obsolete">74-83/86</unitid>
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                                  <unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
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                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903446">3094</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cf4-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                              </did>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903447">103</unitid>
                                <unitid audience="internal" type="obsolete">74-83/87</unitid>
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                                  <unitdate calendar="gregorian" normal="1978/1982" era="ce">1978-1982</unitdate>
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                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903448">102</unitid>
                                <unitid audience="internal" type="obsolete">74-83/87</unitid>
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                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
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                                <physdesc>
                                  <extent>omslag</extent>
                                </physdesc>
                              </did>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903449">101</unitid>
                                <unitid audience="internal" type="obsolete">74-83/86</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cf7-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Documentatie.</unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903450">1083</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/373(710)</unitid>
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                              <unittitle>Giessendam, uitbreidingsplan De Peulen,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903451">853</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/198(435)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4cf9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gorinchem,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903452">493</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/190(19)</unitid>
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                              <unittitle>Gouda,<unitdate calendar="gregorian" normal="1914" era="ce">1914</unitdate>
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                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>797, 864</unitid>
                              <unittitle>'s-Gravenhage.<unitdate calendar="gregorian" normal="1946/1953" era="ce">1946-1953</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63903454">797</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/191(403)</unitid>
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                              <unitid identifier="63903456">610</unitid>
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                                <unitid identifier="63903461">1727</unitid>
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                              <unitid identifier="63903462">868</unitid>
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                              <unitid identifier="63903463">830</unitid>
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                              <unitid identifier="63903464">671</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/104</unitid>
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                              <unitid identifier="63903465">716</unitid>
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                              <unitid identifier="63903466">553</unitid>
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                            <did>
                              <unitid identifier="63903467">1248</unitid>
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                                <unitid identifier="63903470">689</unitid>
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                                  <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                              <did>
                                <unitid identifier="63903471">690</unitid>
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                                  <unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
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                              <did>
                                <unitid identifier="63903472">858</unitid>
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                                  <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                            <did>
                              <unitid identifier="63903473">959</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/319(595)</unitid>
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                              <did>
                                <unitid identifier="63903475">523</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/152(54)</unitid>
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                                  <unitdate calendar="gregorian" normal="1920" era="ce">1920</unitdate>
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                              <did>
                                <unitid identifier="63903476">721</unitid>
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                                <unittitle>En de buurtschap De Groote Lindt,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                          <did>
                            <unitid identifier="63903477">1182</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/398(816)</unitid>
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                            <unittitle>Leiden, verbetering van de watervoorziening van het Academisch Ziekenhuis.</unittitle>
                            <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                              <unitid identifier="63903479">623</unitid>
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                              <unittitle>Het adviseren inzake grondaankoop ten behoeve van de waterwinplaats der N.V. Westlandsche Drinkwatermaatschappij,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                              <unitid identifier="63903481">372</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/40</unitid>
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                              <unitid identifier="63903482">886</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/255(453)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d15-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Uitbreiding en verbetering van het pompstation en het hoofdbuizennet van de Stichting De Kilwaterleiding,<unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                            <did>
                              <unitid identifier="63903484">1567</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/004(1008)</unitid>
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                            <did>
                              <unitid identifier="63903485">3093</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d18-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Haagse en Leidse regio, rapport van de Commissie Wijde AA - Andelse Maas inzake de toekomstige aanvoer van water ten behoeve van infiltratie in het Katwijkse duingebied gezien in relatie tot de drinkwatervoorziening, met bijlagen,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903486">540</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/007(69)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d19-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Hoeksche Waard, plan voor de drinkwatervoorziening van het oostelijk deel,<unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903487">373</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/41</unitid>
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                              <unittitle>Rozenburg, watervoorziening op het eiland,<unitdate calendar="gregorian" normal="1939/1948" era="ce">1939-1948</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903488">480</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/097(2)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d1b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voorne, Putten en Hoeksche Waard; gemeenschappelijke waterleiding voor de eilanden,<unitdate calendar="gregorian" normal="1910" era="ce">1910</unitdate>
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                              <did>
                                <unitid identifier="63903490">503</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/097(31)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d1d-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Plan voor een centrale drinkwatervoorziening,<unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
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                              </did>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903491">1441</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/097(1431)</unitid>
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                                <unittitle>Ontwerp van een waterleiding,<unitdate calendar="gregorian" normal="1918" era="ce">1918</unitdate>
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                              <did>
                                <unitid identifier="63903493">1095</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/097(676)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d1f-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>De financiële aspecten van de drinkwatervoorziening van het onrendabele gebied,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                            <did>
                              <unitid identifier="63903494">765</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/097(320)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d20-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voorne, Putten, Goudswaard, Piershil, Nieuw-Beyerland en Rozenburg; onderzoek naar de mogelijkheden van waterleidingsplannen,<unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
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                            <did>
                              <unitid identifier="63903495">3147</unitid>
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                              <unittitle>Voorne, Putten en Rozenburg,<unitdate calendar="gregorian" normal="1942/1972" era="ce">1942-1972</unitdate>
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                            <did>
                              <unitid identifier="63903496">530</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/115(61)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d22-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Westland, centrale drinkwatervoorziening,<unitdate calendar="gregorian" normal="1920/1921" era="ce">1920-1921</unitdate>
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                            <did>
                              <unitid identifier="63903498">371</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/39</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d24-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nieuwpoort en Langerak, gemeenten; het verstrekken van advies aan de gemeentebesturen over het aansluiten van deze gemeenten bij het waterleidingbedrijf de Drinkwatervoorziening de Alblasserwaard ende Vijfheerenlanden of bij de NV Alblasserdamsche Waterleidingmaatschappij,<unitdate calendar="gregorian" normal="1935/1936" era="ce">1935-1936</unitdate>
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                            <did>
                              <unitid identifier="63903499">782</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/097(339)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d25-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Oostvoorne en Rockanje, nota inzake de drinkwatervoorziening,<unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903500">1123</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/111(745)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d26-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Sliedrecht en Hardinxveld-Giessendam, gemeenten; de toekomstige drinkwatervoorziening,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903501">687</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/110(263)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d27-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voorburg, Rijswijk, Stompwijk en Veur, gemeenten; Stichting van een gemeenschappelijke waterleiding De Vlietstreek,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                          <did>
                            <unitid identifier="63903502">323</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/56</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d28-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zuid-Holland, overleg met Gedeputeerde Staten van Zuid-Holland naar aanleiding van klachten over de werkwijze van het RID bij het geven van advies met betrekking tot de uitbreiding van drinkwatervoorzieningen.</unittitle>
                            <unitdate calendar="gregorian" normal="1923/1952" era="ce">1923-1952</unitdate>
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                              <unitid identifier="63903509">375</unitid>
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                              <unitid identifier="63903510">648</unitid>
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                            <did>
                              <unitid identifier="63903512">692</unitid>
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                              <unitid identifier="63903513">732</unitid>
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                              <unitid identifier="63903514">1003</unitid>
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                          <did>
                            <unitid identifier="63903516">376</unitid>
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                            <unittitle>Middelburg, Vlissingen en Goes, gemeenten; het verstrekken van advies aan de waarnemend secretaris-generaal van het departement van Sociale Zaken over het plan om de drinkwatervoorziening te verzekeren door middel van water uit betonbakken indien de centrale waterleiding door oorlogshandelingen zou uitvallen.</unittitle>
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                                <unitid identifier="63903519">505</unitid>
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                                <unitid identifier="63903520">611</unitid>
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                                <unitid identifier="63903523">492</unitid>
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                              <did>
                                <unitid identifier="63903525">656</unitid>
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                                <unittitle>Commissie inzake de drinkwatervoorziening van Walcheren,<unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
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                                <unitid identifier="63903526">888</unitid>
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                              <did>
                                <unitid identifier="63903527">1048</unitid>
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                                <unittitle>Nota Watervoorziening Walcheren,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                              <did>
                                <unitid identifier="63903528">518</unitid>
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                                <unitid identifier="63903530">532</unitid>
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                                  <unitdate calendar="gregorian" normal="1921" era="ce">1921</unitdate>
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                                <unitid identifier="63903531">542</unitid>
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                                  <unitdate calendar="gregorian" normal="1923" era="ce">1923</unitdate>
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                              <did>
                                <unitid identifier="63903533">481</unitid>
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                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903534">2164</unitid>
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                          <did>
                            <unitid identifier="63903536">531</unitid>
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                            <unittitle>Schelde, het leggen van een waterleidingbuis.</unittitle>
                            <unitdate calendar="gregorian" normal="1921" era="ce">1921</unitdate>
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                            <unitdate calendar="gregorian" normal="1924/1957" era="ce">1924-1957</unitdate>
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                            <did>
                              <unitid identifier="63903539">555</unitid>
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                            <did>
                              <unitid identifier="63903540">554</unitid>
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                              <unittitle>Verbetering der drinkwatervoorziening van het Geneeskundig Gesticht Voorburg te Vught,<unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
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                            </did>
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                            <did>
                              <unitid identifier="63903541">379</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/47</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d4c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Centrale watervoorziening voor het dorp Gilze, het maken van brandputten aldaar en de watervoorziening van het vliegveld te Gilze-Rijen,<unitdate calendar="gregorian" normal="1946/1947" era="ce">1946-1947</unitdate>
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                            <did>
                              <unitid identifier="63903542">889</unitid>
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                              <unittitle>Uitbreiding van de waterwinplaats NV Tilburgsche Waterleiding Maatschappij,<unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                            </did>
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                            <did>
                              <unitid identifier="63903543">967</unitid>
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                              <unittitle>Nota Huidige stand van de drinkwatervoorziening in de provincie,<unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903544">1050</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/322(661)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d4f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport Drinkwatervoorziening Noord-Brabant,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                            <did>
                              <unitid identifier="63903546">717</unitid>
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                            </did>
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                            <did>
                              <unitid>569, 831</unitid>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903548">569</unitid>
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                                  <unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
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                              <did>
                                <unitid identifier="63903549">831</unitid>
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                          </c>
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                            <did>
                              <unitid identifier="63903550">378</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/46</unitid>
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                              <unittitle>Deurne, kerkdorp Helenaveen,<unitdate calendar="gregorian" normal="1945/1953" era="ce">1945-1953</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903551">1005</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/049(491)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d56-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Elst,<unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903552">694</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(270)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d57-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gemert,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                            <did>
                              <unitid identifier="63903553">595</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/033(152)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d58-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Goirle,<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903554">543</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/066(72)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d59-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Heeze,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903556">695</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/123(271)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d5a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Helmond,<unitdate calendar="gregorian" normal="1937/1939" era="ce">1937-1939</unitdate>
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                                  <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                                <unitid identifier="63903560">1054</unitid>
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                                  <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                            <did>
                              <unitid identifier="63903561">382</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/49</unitid>
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                            <did>
                              <unitid identifier="63903562">575</unitid>
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                            <did>
                              <unitid identifier="63903563">380</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/48</unitid>
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                                <unitid identifier="63903565">524</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/036(55)</unitid>
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                                  <unitdate calendar="gregorian" normal="1920" era="ce">1920</unitdate>
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                                <unitid identifier="63903566">600</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/036(154)</unitid>
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                                  <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
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                              <did>
                                <unitid identifier="63903567">662</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/086(189)</unitid>
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                                  <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
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                            <did>
                              <unitid identifier="63903568">536</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/106(67)</unitid>
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                        <c otherlevel="filegrp" level="otherlevel">
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                          <c level="file">
                            <did>
                              <unitid identifier="63903570">506</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/041(34)</unitid>
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                              <unitid identifier="63903571">664</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(191)</unitid>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903572">678</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/116(251)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d6a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verbetering van de drinkwatervoorziening van een aantal dienstwoningen van de Rijkswaterstaat in de Directie Noord-Brabant,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903575">735</unitid>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903577">592</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/018(103)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d6e-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                              </did>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903578">616</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/018(119)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d6f-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903579">627</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/125(166)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d70-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deurne en Asten,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                            <did>
                              <unitid identifier="63903580">625</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/012(163)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d71-79fa-e053-09f0900a5ea8</unitid>
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                            <did>
                              <unitid identifier="63903581">693</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(269)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d72-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gemert en Aarle-Rixtel,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903582">734</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(298)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d73-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Helvoirt en Udenhout,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903583">1011</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/140(514)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d74-79fa-e053-09f0900a5ea8</unitid>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903584">593</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/153(151)</unitid>
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                            <did>
                              <unitid identifier="63903587">1014</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/221(635)</unitid>
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                              <unittitle>Waterwinning uit het Krijt, ten noorden van Meerssen, rapport uitgebracht aan de N.V. Waterleidingmaatschappij voor Zuid-Limburg,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                            <did>
                              <unitid identifier="63903588">1126</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/377(757)</unitid>
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                              <unittitle>Concept-rapport inzake de drinkwatervoorziening in de provincie Limburg,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                              <unitid identifier="63903590">384</unitid>
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                            <did>
                              <unitid identifier="63903591">596</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/032(153)</unitid>
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                            <did>
                              <unitid identifier="63903592">1159</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/044(782)</unitid>
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                            <did>
                              <unitid identifier="63903593">803</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/141(408)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d7e-79fa-e053-09f0900a5ea8</unitid>
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                            <did>
                              <unitid identifier="63903594">882</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/292(555)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d7f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Kerkrade,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                              <did>
                                <unitid identifier="63903596">629</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/044(168)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d81-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903597">816</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/044(369)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d82-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903598">928</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/260(481)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d83-79fa-e053-09f0900a5ea8</unitid>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903599">738</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/192(301)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d84-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vaals,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903600">696</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/122(272)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d85-79fa-e053-09f0900a5ea8</unitid>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903602">597</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/068(105)</unitid>
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                          <c level="file">
                            <did>
                              <unitid identifier="63903603">617</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/324(120)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d87-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Weert,<unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
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                            <unitdate calendar="gregorian" normal="1918/1966" era="ce">1918-1966</unitdate>
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                              <did>
                                <unitid identifier="63903606">520</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/108(49)</unitid>
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                                <unitid identifier="63903607">547</unitid>
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                                  <unitdate calendar="gregorian" normal="1923" era="ce">1923</unitdate>
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                              <unittitle>Midden-Limburg.<unitdate calendar="gregorian" normal="1918/1953" era="ce">1918-1953</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63903609">1442</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/108(1432)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d8d-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Groepwaterleiding voor dertig gemeenten gelegen ten westen van de Maas,<unitdate calendar="gregorian" normal="1918" era="ce">1918</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c otherlevel="filegrp" level="otherlevel">
                              <did>
                                <unitid>507, 881</unitid>
                                <unittitle>Plan van de watervoorziening bewesten de Maas.<unitdate calendar="gregorian" normal="1918/1953" era="ce">1918-1953</unitdate>
                                </unittitle>
                              </did>
                              <c level="file">
                                <did>
                                  <unitid identifier="63903611">507</unitid>
                                  <unitid audience="internal" type="obsolete">R09-80/108(35)</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d8f-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>Dertig gemeenten,<unitdate calendar="gregorian" normal="1918" era="ce">1918</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                              <c level="file">
                                <did>
                                  <unitid identifier="63903612">881</unitid>
                                  <unitid audience="internal" type="obsolete">R09-80/108(554)</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d90-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>Achttien gemeenten,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903613">879</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/108(553)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d91-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Beoosten de Maas (plan Echt en omgeving), plan voor de drinkwatervoorziening van negen gemeenten,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>div.nrs.</unitid>
                              <unittitle>Midden- en Noord-Limburg.<unitdate calendar="gregorian" normal="1926/1966" era="ce">1926-1966</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63903615">598</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/108(106)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d93-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Midden Groep, toelichting met rentabiliteitsberekening betreffende een centrale drinkwatervoorziening,<unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903616">802</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/108(407)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d94-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nota inzake technische richtlijnen voor de drinkwatervoorziening,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903617">1270</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/108(928)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d95-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Drinkwatervoorziening nu en in de toekomst,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>1226, 1293</unitid>
                              <unittitle>Zuid-Limburg, de drinkwatervoorziening nu en in de toekomst.<unitdate calendar="gregorian" normal="1964/1965" era="ce">1964-1965</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63903620">1226</unitid>
                                <unitid audience="internal" type="obsolete">R(871)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d97-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903621">1293</unitid>
                                <unitid audience="internal" type="obsolete">R16-83/1965-009(908)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d98-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Samenwerkende gemeenten.</unittitle>
                            <unitdate calendar="gregorian" normal="1947/1959" era="ce">1947-1959</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63903623">926</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/256(480)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d9a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Beesel en Belfeld,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>1063, 1091</unitid>
                              <unittitle>Eijgelshoven, Nieuwenhagen, Schaesberg en Ubach over Worms.<unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63903625">1063</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/202(687)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d9c-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63903626">1091</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/202(720)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d9d-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903627">883</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/202(556)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d9e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Eijgelshoven, Ubach en Nieuwenhagen,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903628">383</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/50</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4d9f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Heel en Panheel,<unitdate calendar="gregorian" normal="1947/1951" era="ce">1947-1951</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903629">923</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/108(478)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4da0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Mook en Middelaar, Ottersum, Gennep en Bergen (buurtschap Heyen),<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63903630">865</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/229(443)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4da1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Venray, Horst en Sevenum,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.11.01.12</unitid>
                          <unittitle>Flevoland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63903633">1098</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/349(726)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4da3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oostelijk-Flevoland, nota inzake de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">938</unitid>
                    <unittitle>Het opstellen en uitvoeren van subsidieregelingen op het terrein van de drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Meerjarenplannen 1946, 1950, 1960.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63904322">135</unitid>
                      <unitid audience="internal" type="obsolete">74-83/118</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5038-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Behandeling van de subsidieregeling voor aanleg van waterleidingen in onrendabele gebieden en met name onderzoek naar een juiste wijze van toepassing van de steunformule R en A voor het berekenen van de subsidie.</unittitle>
                      <unitdate calendar="gregorian" normal="1960/1975" era="ce">1960-1975</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904323">355</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72/22</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5039-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Notities over het subsidiebeleid voor drinkwatervoorziening na 1945.</unittitle>
                      <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904324">47</unitid>
                      <unitid audience="internal" type="obsolete">74-83/61</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-503a-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>De rol van het Rijk bij het verstrekken van subsidies bij het uitvoeren van gemeentelijke rioleringswerken.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid type="blank">---</unitid>
                      <unitid audience="internal" type="obsolete">74-83/62</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/857327d3-fa49-5cc5-e053-09f0900a2b1a</unitid>
                      <unittitle>De regling voor het verstrekken van subidies voor het aanleggen van riolering in onrendabele gebieden</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1975" era="ce">1974-1975</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">1250</unitid>
                    <unittitle>Het geven van voorlichting inzake de drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Bewerkingsplan Archief Rijksinstituut voor Drinkwatervoorziening, Ministerie van Volksgezondheid, Welzijn en Sport, CDBFO/DIV, april 1995.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="65486088">30</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/857327d3-fa4a-5cc5-e053-09f0900a2b1a</unitid>
                      <unittitle>Introductieboekje Rijkinstituut Drinkwatervoorziening</unittitle>
                      <unitdate calendar="gregorian" era="ce">z.d.</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903268">708</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c4a-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Excursieverslagen.</unittitle>
                      <unitdate calendar="gregorian" normal="1932/1953" era="ce">1932-1953</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903269">317</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/49</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c4b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Totstandkoming van het gedenkboek ter gelegenheid van het 25-jarig bestaan.</unittitle>
                      <unitdate calendar="gregorian" normal="1937/1939" era="ce">1937-1939</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903270">2740</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c4c-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslagen van excursies, dienst- en studiereizen door personeelsleden van het RID naar het buitenland.</unittitle>
                      <unitdate calendar="gregorian" normal="1937/1972" era="ce">1937-1972</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903271">2741</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c4d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Voordrachten op congressen in Nederland en het buitenland door prof. W.F.J.M. Krul als directeur van het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1940/1956" era="ce">1940-1956</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903272">2881</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c4e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Artikelen van W.F.J.M. Krul ten behoeve van het bulletin Centre Belge d'Etude et de Documentation des Eaux.</unittitle>
                      <unitdate calendar="gregorian" normal="1948/1958" era="ce">1948-1958</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903273">318</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/50</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c4f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Publikaties Holland and its drinking water problems en L'eau potable en Hollande, uitgegeven ter gelegenheid van het 40-jarig bestaan van het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903274">16</unitid>
                      <unitid audience="internal" type="obsolete">74-83/17</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c50-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Totstandkoming van de brochure RID adviesvoorwaarden regelende de verhouding tussen opdrachtgever en het RID als adviserende instelling.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63903275">3088</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-4c51-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslag van de conferentie, maart 1982 te Heelsum gehouden inzake het toekomstig beleid van het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">1334</unitid>
                    <unittitle>Het repressief en preventief controleren van vergunningsplichtige en niet-vergunningsplichtige inrichtingen op de naleving van de milieuregels.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Opm.: Vanaf 1945 tot en met 1984 was het Rijksinstituut voor de Drinkwatervoorziening (RID) belast met het toezicht op de (drink)watervoorziening.<lb></lb>Het toezicht op de uitvoering van de Hinderwet geschiedt op provinciaal niveau.<lb></lb>Deel van deze handeling maakt ook uit:<lb></lb>- Het houden van toezicht op de uitvoering van bodemsaneringsprojecten.<lb></lb>- Het uitoefenen van toezicht op waterleidingbedrijven (art. 2, Waterleidingbesluit).<lb></lb>Toezichthoudende bevoegdheden zijn:<lb></lb>- De bevoegdheid inzage te krijgen en afschrift te nemen van boeken en andere zakelijke bescheiden.<lb></lb>- De bevoegdheid vervoermiddelen en hun lading te onderzoeken.<lb></lb>- De bevoegdheid met apparatuur alle plaatsen te betreden.<lb></lb>- De bevoegdheid zich te laten vergezellen door bepaalde aangewezen personen.<lb></lb>- De bevoegdheid goederen aan opneming en onderzoek te onderwerpen en daarvan monsters te nemen.<lb></lb>- De bevoegdheid om in afwachting van een nadere maatregel bepaalde handelingen te verbieden als er gevaar dreigt voor het milieu. Een en ander is expliciet geformuleerd met betrekking tot handelingen met radioactieve stoffen. In veel gevallen volgt na zo'n verbod spoedig een nieuwe controle. De inspecteur kan het verbod herhalen mocht tijdens de hernieuwde controle geconstateerd worden dat de houder van de inrichting zich niet aan het verbod houdt. Dit kan eventueel gebeuren met dreiging van bestuursdwang.<lb></lb>- De bevoegdheid om door het opmaken van een proces-verbaal strafbare feiten te constateren en aangifte te doen bij justitie.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.10</unitid>
                      <unittitle>TOEZICHT OP WATERLEIDINGBEDRIJVEN IN NEDERLAND</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.01</unitid>
                        <unittitle>Groningen</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904333">2633</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(97)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5043-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Groningen.</unittitle>
                          <unitdate calendar="gregorian" normal="1923/1957" era="ce">1923-1957</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904334">2828</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5044-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haren.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1946" era="ce">1926-1946</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904335">2634</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(98)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5045-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Winschoten.</unittitle>
                          <unitdate calendar="gregorian" normal="1913/1963" era="ce">1913-1963</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.02</unitid>
                        <unittitle>Friesland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904337">2635</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(99)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5047-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Algemeen.</unittitle>
                          <unitdate calendar="gregorian" normal="1915/1945" era="ce">1915-1945</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904338">2636</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(100)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5048-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Drachten.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1924" era="ce">1920-1924</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904339">2637</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(101)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5049-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gaasterland.</unittitle>
                          <unitdate calendar="gregorian" normal="1917/1918" era="ce">1917-1918</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904340">2638</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(102)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-504a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gorredijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904341">2639</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(103)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-504b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haskerdijken.</unittitle>
                          <unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904343">2640</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(104)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-504c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haskerland.</unittitle>
                          <unitdate calendar="gregorian" normal="1922/1928" era="ce">1922-1928</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904344">2641</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(106)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-504d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Opsterland.</unittitle>
                          <unitdate calendar="gregorian" normal="1928/1930" era="ce">1928-1930</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904345">2642</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(107)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-504e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Tietjerkstradeel.</unittitle>
                          <unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904346">2643</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(108)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-504f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Twijzelerheide.</unittitle>
                          <unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904347">2644</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(109)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5050-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wolvega.</unittitle>
                          <unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.03</unitid>
                        <unittitle>Drenthe</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2652-2653</unitid>
                          <unittitle>Algemeen.</unittitle>
                          <unitdate calendar="gregorian" normal="1928/1973" era="ce">1928-1973</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904350">2652</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(110)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5053-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1928/1943" era="ce">1928-1943</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904351">2653</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(110)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5054-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1945/1973" era="ce">1945-1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904352">2645</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(111,112)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5055-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Assen.</unittitle>
                          <unitdate calendar="gregorian" normal="1935/1969" era="ce">1935-1969</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904353">2654</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(113)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5056-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Beilen.</unittitle>
                          <unitdate calendar="gregorian" normal="1941/1951" era="ce">1941-1951</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904354">2646</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(114)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5057-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Coevorden.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1957" era="ce">1912-1957</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904355">2647</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(115)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5058-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Emmen.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1959" era="ce">1924-1959</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904356">2648</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(116)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5059-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gasselte.</unittitle>
                          <unitdate calendar="gregorian" normal="1931/1951" era="ce">1931-1951</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2649-2650</unitid>
                          <unittitle>Hoogeveen.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1973" era="ce">1926-1973</unitdate>
                        </did>
                        <odd>
                          <p>Niet nader onder te verdelen</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63904361">2649</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(117,118)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-505d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1926/1972" era="ce">1926-1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904362">2650</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(117,118)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-505e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1953/1973" era="ce">1953-1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904363">2651</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(119,120)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-505f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Meppel.</unittitle>
                          <unitdate calendar="gregorian" normal="1930/1967" era="ce">1930-1967</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.04</unitid>
                        <unittitle>Overijssel</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904365">2655</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(121)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5061-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Almelo.</unittitle>
                          <unitdate calendar="gregorian" normal="1932/1950" era="ce">1932-1950</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904366">2658</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(123)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5062-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Deventer.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1970" era="ce">1924-1970</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904368">2656</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(124)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5063-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Enschede.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1971" era="ce">1926-1971</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904369">2657</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(125)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5064-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Goor.</unittitle>
                          <unitdate calendar="gregorian" normal="1909/1960" era="ce">1909-1960</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904370">2659</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(126)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5065-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hengelo.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1973" era="ce">1920-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904371">2660</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(127)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5066-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kampen.</unittitle>
                          <unitdate calendar="gregorian" normal="1934/1970" era="ce">1934-1970</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904372">2661</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(128)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5067-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oldenzaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1925/1954" era="ce">1925-1954</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904373">2662</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(129)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5068-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zwolle.</unittitle>
                          <unitdate calendar="gregorian" normal="1915/1957" era="ce">1915-1957</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.05</unitid>
                        <unittitle>Gelderland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904375">2664</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(130)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-506a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Algemeen.</unittitle>
                          <unitdate calendar="gregorian" normal="1933/1973" era="ce">1933-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2668, 2675</unitid>
                          <unittitle>Apeldoorn.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1971" era="ce">1920-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904377">2668</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(131)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-506c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1920/1953" era="ce">1920-1953</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904378">2675</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(133, 134, 135)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-506d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1954/1971" era="ce">1954-1971</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2687-2688</unitid>
                          <unittitle>Arnhem.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1973" era="ce">1924-1973</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904380">2687</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(136)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-506f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1924/1944" era="ce">1924-1944</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904381">2688</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(136,137)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5070-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1945/1973" era="ce">1945-1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904382">2663</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(138)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5071-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Berg en Dal.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1961" era="ce">1926-1961</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904383">2665</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(139)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5072-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Borculo.</unittitle>
                          <unitdate calendar="gregorian" normal="1923/1961" era="ce">1923-1961</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904384">2666</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(140)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5073-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Deil.</unittitle>
                          <unitdate calendar="gregorian" normal="1935/1937" era="ce">1935-1937</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904385">2667</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(141)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5074-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Driel.</unittitle>
                          <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904386">2669</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(142)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5075-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ede.</unittitle>
                          <unitdate calendar="gregorian" normal="1921/1973" era="ce">1921-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904387">2670</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(143)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5076-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eerbeek.</unittitle>
                          <unitdate calendar="gregorian" normal="1954/1956" era="ce">1954-1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904389">2671</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(144)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5077-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Elst.</unittitle>
                          <unitdate calendar="gregorian" normal="1914/1960" era="ce">1914-1960</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904390">2672</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(145)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5078-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Elten.</unittitle>
                          <unitdate calendar="gregorian" normal="1949/1963" era="ce">1949-1963</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904391">2673</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(146)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5079-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Epe.</unittitle>
                          <unitdate calendar="gregorian" normal="1955/1959" era="ce">1955-1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904392">2674</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(148)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-507a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Harderwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1915/1948" era="ce">1915-1948</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904393">2676</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(149)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-507b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lienden.</unittitle>
                          <unitdate calendar="gregorian" normal="1939/1956" era="ce">1939-1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904394">2677</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(150)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-507c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lochem.</unittitle>
                          <unitdate calendar="gregorian" normal="1923/1959" era="ce">1923-1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904395">2678</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(152)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-507d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nijkerk.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1958" era="ce">1926-1958</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904396">2679</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(153)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-507e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nijmegen.</unittitle>
                          <unitdate calendar="gregorian" normal="1921/1973" era="ce">1921-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904398">2680</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(154)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-507f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Putten.</unittitle>
                          <unitdate calendar="gregorian" normal="1955/1957" era="ce">1955-1957</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904399">2681</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(155)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5080-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Renkum.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1959" era="ce">1920-1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904400">2682</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(156)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5081-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rheden.</unittitle>
                          <unitdate calendar="gregorian" normal="1919/1957" era="ce">1919-1957</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904401">2683</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(158)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5082-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorst.</unittitle>
                          <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904402">2684</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(159)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5083-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorthuizen.</unittitle>
                          <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904403">2685</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(160)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5084-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wageningen.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1941" era="ce">1924-1941</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904404">2686</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(161)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5085-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Winterswijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1922/1965" era="ce">1922-1965</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904405">2495</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(163)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5086-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zevenaar.</unittitle>
                          <unitdate calendar="gregorian" normal="1925/1947" era="ce">1925-1947</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.06</unitid>
                        <unittitle>Utrecht</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904407">2496</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(165)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5088-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amersfoort.</unittitle>
                          <unitdate calendar="gregorian" normal="1919/1965" era="ce">1919-1965</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904408">2497</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(166)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5089-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Doorn.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1951" era="ce">1911-1951</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904409">2498</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(167)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-508a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Jutphaas.</unittitle>
                          <unitdate calendar="gregorian" normal="1944/1947" era="ce">1944-1947</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904410">2499</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(168)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-508b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maarssen.</unittitle>
                          <unitdate calendar="gregorian" normal="1939/1957" era="ce">1939-1957</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904411">2500</unitid>
                          <unitid audience="internal" type="obsolete">B456,13-73(169)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-508c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Montfoort.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1943" era="ce">1924-1943</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904412">2501</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(170)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-508d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oudewater.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1959" era="ce">1938-1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904413">2506</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(171)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-508e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Utrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1951" era="ce">1920-1951</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                        <odd>
                          <p>Niet nader onder te verdelen onderzoek in diverse gemeenten</p>
                        </odd>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904416">2511</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(172)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5091-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Veenendaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1929/1937" era="ce">1929-1937</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.07</unitid>
                        <unittitle>Noord-Holland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904418">2515</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(173)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5093-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amsterdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1969" era="ce">1912-1969</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904419">2516</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(174)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5094-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bloemendaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1950/1954" era="ce">1950-1954</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904420">2519</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(175)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5095-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bussum.</unittitle>
                          <unitdate calendar="gregorian" normal="1931/1971" era="ce">1931-1971</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904421">2524</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(177)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5096-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Egmond aan Zee.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1958" era="ce">1911-1958</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904422">2525</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(178)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5097-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haarlem.</unittitle>
                          <unitdate calendar="gregorian" normal="1951/1963" era="ce">1951-1963</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904423">2526</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(179)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5098-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Halfweg.</unittitle>
                          <unitdate calendar="gregorian" normal="1913/1916" era="ce">1913-1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904424">2523</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(176)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5099-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Den Helder.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1969" era="ce">1912-1969</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2527-2528</unitid>
                          <unittitle>Hillegom.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1970" era="ce">1920-1970</unitdate>
                        </did>
                        <odd>
                          <p>Niet nader onder te verdelen</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63904429">2527</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(180)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-509d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1920/1962" era="ce">1920-1962</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904430">2528</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(182)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-509e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1950/1970" era="ce">1950-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904431">2529</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(183)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-509f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hilversum.</unittitle>
                          <unitdate calendar="gregorian" normal="1936/1952" era="ce">1936-1952</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904432">2530</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(184)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Laren.</unittitle>
                          <unitdate calendar="gregorian" normal="1925/1926" era="ce">1925-1926</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2532-2533</unitid>
                          <unittitle>Velsen.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1969" era="ce">1912-1969</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904434">2532</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(186)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1912/1942" era="ce">1912-1942</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904435">2533</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(187)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1947/1969" era="ce">1947-1969</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904436">2535</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(189)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zandvoort.</unittitle>
                          <unitdate calendar="gregorian" normal="1947/1964" era="ce">1947-1964</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.08</unitid>
                        <unittitle>Zuid-Holland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904438">2537</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(190)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Alblasserdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1934/1970" era="ce">1934-1970</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904439">2538</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(191)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Alphen aan den Rijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1929/1973" era="ce">1929-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904440">2540</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(192)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Barendrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1937/1971" era="ce">1937-1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904441">2541</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(193,194)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50a9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bodegraven.</unittitle>
                          <unitdate calendar="gregorian" normal="1931/1967" era="ce">1931-1967</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Boskoop.</unittitle>
                          <unitdate calendar="gregorian" normal="1914/1973" era="ce">1914-1973</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904443">2561</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(195)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ab-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1914/1933" era="ce">1914-1933</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904444">2563</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(196)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ac-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1934/1958" era="ce">1934-1958</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904445">2566</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(197)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ad-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1963/1973" era="ce">1963-1973</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904446">2568</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(198)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ae-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Brielle.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1964" era="ce">1920-1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904447">2531</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(199)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50af-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Delft.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1968" era="ce">1912-1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904448">2534</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(200)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dordrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1962" era="ce">1911-1962</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904449">2536</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(201)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dubbeldam.</unittitle>
                          <unitdate calendar="gregorian" normal="1958/1966" era="ce">1958-1966</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904450">2539</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(202)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gorinchem.</unittitle>
                          <unitdate calendar="gregorian" normal="1930/1968" era="ce">1930-1968</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904451">2542</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(203)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gouda.</unittitle>
                          <unitdate calendar="gregorian" normal="1943/1962" era="ce">1943-1962</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904452">2543</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(204)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>'s-Gravendeel.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1935" era="ce">1924-1935</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2544-2550</unitid>
                          <unittitle>'s-Gravenhage.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1970" era="ce">1911-1970</unitdate>
                        </did>
                        <odd>
                          <p>3345 en 3346 zijn niet nader onder te verdelen</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63904457">2544</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(205)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1911/1933" era="ce">1911-1933</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904458">2545</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(205)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50b9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1934/1935" era="ce">1934-1935</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904459">2546</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(206)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ba-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1936/1937" era="ce">1936-1937</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904460">2547</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(206)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50bb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904461">2548</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(207)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50bc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1939/1940" era="ce">1939-1940</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904462">2549</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(208)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50bd-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1941/1959" era="ce">1941-1959</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904463">2550</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(208)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50be-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1948/1970" era="ce">1948-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904464">2551</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(209)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50bf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hardinxveld-Giessendam.</unittitle>
                          <unitdate calendar="gregorian" normal="1922/1969" era="ce">1922-1969</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904465">2552</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(210)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hendrik-Ido-Ambacht.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1973" era="ce">1911-1973</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2553-2554</unitid>
                          <unittitle>Hoek van Holland.</unittitle>
                          <unitdate calendar="gregorian" normal="1915/1924" era="ce">1915-1924</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904467">2553</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(211)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1915/1919" era="ce">1915-1919</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904468">2554</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(211)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1920/1924" era="ce">1920-1924</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904469">2555</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(212)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>IJsselmonde.</unittitle>
                          <unitdate calendar="gregorian" normal="1933/1941" era="ce">1933-1941</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904470">2556</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(213)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leerdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1919/1953" era="ce">1919-1953</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904471">2557</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(214)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leiden.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1956" era="ce">1938-1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904472">2558</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(215)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leiderdorp.</unittitle>
                          <unitdate calendar="gregorian" normal="1948/1964" era="ce">1948-1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904473">2560</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(217)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maasland.</unittitle>
                          <unitdate calendar="gregorian" normal="1954/1966" era="ce">1954-1966</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904474">2559</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(218)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50c9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maassluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1956" era="ce">1911-1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904475">2562</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(219)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ca-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nieuwerkerk aan den IJssel.</unittitle>
                          <unitdate calendar="gregorian" normal="1939/1942" era="ce">1939-1942</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904476">2564</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(220)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50cb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noordwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1916/1973" era="ce">1916-1973</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904477">2565</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(221)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50cc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oud-Beijerland.</unittitle>
                          <unitdate calendar="gregorian" normal="1962/1964" era="ce">1962-1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904478">2567</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(223)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50cd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Reeuwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1931/1934" era="ce">1931-1934</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904479">2569</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(224)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ridderkerk.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1972" era="ce">1924-1972</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904481">2570</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(225)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50cf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rotterdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1933/1971" era="ce">1933-1971</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904482">2571</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(226)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schoonhoven.</unittitle>
                          <unitdate calendar="gregorian" normal="1939/1952" era="ce">1939-1952</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904483">2572</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(227)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sliedrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1966" era="ce">1920-1966</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904484">2573</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(228)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vianen.</unittitle>
                          <unitdate calendar="gregorian" normal="1930/1964" era="ce">1930-1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904485">2574</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(229)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vlaardingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1915/1949" era="ce">1915-1949</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904486">2575</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(230)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorhout.</unittitle>
                          <unitdate calendar="gregorian" normal="1927/1949" era="ce">1927-1949</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904487">2576</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(231)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorschoten.</unittitle>
                          <unitdate calendar="gregorian" normal="1937/1972" era="ce">1937-1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904488">2577</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(232)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Waddinxveen.</unittitle>
                          <unitdate calendar="gregorian" normal="1939/1956" era="ce">1939-1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904489">2578</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(233)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Warmond.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1956" era="ce">1920-1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904490">2579</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(234)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wassenaar.</unittitle>
                          <unitdate calendar="gregorian" normal="1916/1968" era="ce">1916-1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904491">2580</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(235)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50d9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Woerden.</unittitle>
                          <unitdate calendar="gregorian" normal="1927/1967" era="ce">1927-1967</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904492">2582</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(236,237,238)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50da-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zwijndrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1973" era="ce">1924-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.09</unitid>
                        <unittitle>Zeeland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904494">2584</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(239)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50dc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Braakmanpolder.</unittitle>
                          <unitdate calendar="gregorian" normal="1954/1959" era="ce">1954-1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904495">2585</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(240)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50dd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Middelburg.</unittitle>
                          <unitdate calendar="gregorian" normal="1916/1963" era="ce">1916-1963</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904496">2587</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(241)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50de-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Tholen.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1960" era="ce">1912-1960</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904497">2588</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(242)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50df-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Walcheren.</unittitle>
                          <unitdate calendar="gregorian" normal="1947/1954" era="ce">1947-1954</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.10</unitid>
                        <unittitle>Noord-Brabant</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2589-2590</unitid>
                          <unittitle>Bergen op Zoom.</unittitle>
                          <unitdate calendar="gregorian" normal="1925/1970" era="ce">1925-1970</unitdate>
                        </did>
                        <odd>
                          <p>Niet nader onder te verdelen</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63904502">2589</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(243)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50e4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1925/1941" era="ce">1925-1941</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904503">2590</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(244,245,246)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50e5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1931/1970" era="ce">1931-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904504">2581</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(247)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50e6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Berlicum.</unittitle>
                          <unitdate calendar="gregorian" normal="1929/1958" era="ce">1929-1958</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904505">2583</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(248)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50e7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Boxtel-Oisterwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1965" era="ce">1911-1965</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904507">2586</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(249)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50e8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Breda.</unittitle>
                          <unitdate calendar="gregorian" normal="1914/1925" era="ce">1914-1925</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2592-2593</unitid>
                          <unittitle>Breda.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1972" era="ce">1926-1972</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904509">2592</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(253,254)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ea-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1926/1939" era="ce">1926-1939</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904510">2593</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(255.256,257)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50eb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1941/1972" era="ce">1941-1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904511">2598</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(258)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ec-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eindhoven.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1973" era="ce">1920-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904512">2594</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(260,261,262)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ed-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Helmond.</unittitle>
                          <unitdate calendar="gregorian" normal="1923/1972" era="ce">1923-1972</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904513">2591</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(263)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ee-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>'s-Hertogenbosch.</unittitle>
                          <unitdate calendar="gregorian" normal="1919/1971" era="ce">1919-1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904514">2595</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(264)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ef-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Mierlo.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1932" era="ce">1926-1932</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904515">2596</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(265)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Roosendaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1967" era="ce">1911-1967</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904516">2597</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(268)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Tilburg.</unittitle>
                          <unitdate calendar="gregorian" normal="1929/1964" era="ce">1929-1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904517">2605</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(269,270)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Waalwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1972" era="ce">1911-1972</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.11</unitid>
                        <unittitle>Limburg</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904519">2599</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(273)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eygelshoven.</unittitle>
                          <unitdate calendar="gregorian" normal="1922/1969" era="ce">1922-1969</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904520">2600</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(274)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gennep.</unittitle>
                          <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904521">2601</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(275)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Heerlen.</unittitle>
                          <unitdate calendar="gregorian" normal="1925/1969" era="ce">1925-1969</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904522">2602</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(277)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kerkrade.</unittitle>
                          <unitdate calendar="gregorian" normal="1947/1953" era="ce">1947-1953</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904523">2604</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(278)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maastricht.</unittitle>
                          <unitdate calendar="gregorian" normal="1917/1973" era="ce">1917-1973</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904524">2603</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(279)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50f9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Roermond.</unittitle>
                          <unitdate calendar="gregorian" normal="1929/1973" era="ce">1929-1973</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904525">2606</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(282)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50fa-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Tegelen.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1971" era="ce">1926-1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904526">2607</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(283)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50fb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vaals.</unittitle>
                          <unitdate calendar="gregorian" normal="1936/1957" era="ce">1936-1957</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904527">2608</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(284)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50fc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Venlo.</unittitle>
                          <unitdate calendar="gregorian" normal="1916/1972" era="ce">1916-1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904528">2632</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(285,286)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50fd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Weert.</unittitle>
                          <unitdate calendar="gregorian" normal="1927/1972" era="ce">1927-1972</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.10.12</unitid>
                        <unittitle>Flevoland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904530">2609</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(287)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-50ff-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noordoostpolder.</unittitle>
                          <unitdate calendar="gregorian" normal="1941/1956" era="ce">1941-1956</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2610-2613, 2626</unitid>
                          <unittitle>Oostelijk Flevoland.</unittitle>
                          <unitdate calendar="gregorian" normal="1950/1973" era="ce">1950-1973</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904533">2610</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(290)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5101-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Pompstation Bremerberg,<unitdate calendar="gregorian" normal="1962/1973" era="ce">1962-1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904534">2626</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(293)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5102-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Boringen,<unitdate calendar="gregorian" normal="1950/1952" era="ce">1950-1952</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2611-2613</unitid>
                            <unittitle>Wateranalyses.<unitdate calendar="gregorian" normal="1959/1971" era="ce">1959-1971</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63904536">2611</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(296,297,309,310)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5104-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1959/1963" era="ce">1959-1963</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63904537">2612</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(297,298,309)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5105-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63904538">2613</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(298,299,300,302,306,307,309)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5106-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1965/1971" era="ce">1965-1971</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904539">2614</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(311)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5107-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oostelijke en zuidelijke polders.</unittitle>
                          <unitdate calendar="gregorian" normal="1956/1972" era="ce">1956-1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904540">2615</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(316)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5108-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Urk.</unittitle>
                          <unitdate calendar="gregorian" normal="1915/1938" era="ce">1915-1938</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                </c>
              </c>
              <c level="series">
                <did>
                  <unitid type="series_code">178</unitid>
                  <unittitle>Rijksinstituut voor de Drinkwatervoorziening</unittitle>
                </did>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">1</unitid>
                    <unittitle>Het stellen van nadere regels ten aanzien van personeelszaken.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Product: Beleidsnota's, beleidsnotities, rapporten, adviezen, evaluaties enz.
</item>
                      <item>Opm.: Taken:<lb></lb>- Het opstellen en evalueren van regels omtrent indienstneming en ontslag, alsmede het loon en andere arbeidsvoorwaarden van het personeel.<lb></lb>- Het financieel verantwoorden van de centrale personeels-, salaris- en formatieadministratie.<lb></lb>- Het opstellen van procedures voor P en O-werkzaamheden.<lb></lb>- Het voorbereiden van beleid ten aanzien van de CAO Welzijn en het deelnemen aan CAO-overleg in de Maatschappelijk Ondernemersgroep.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>346-347</unitid>
                      <unittitle>Dienstvoorschriften.</unittitle>
                      <unitdate calendar="gregorian" normal="1928/1972" era="ce">1928-1972</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63912111">346</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/81</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c1e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1928/1958" era="ce">1928-1958</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912112">347</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/81</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c1f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1959/1972" era="ce">1959-1972</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912113">2631</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c20-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het delegeren van de bevoegdheid tot het aanstellen van ambtenaren in tijdelijke dienst.</unittitle>
                      <unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912114">32</unitid>
                      <unitid audience="internal" type="obsolete">74-83/47</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c21-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het opstellen van procedures met betrekking tot de personeelsformatie.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912115">6</unitid>
                      <unitid audience="internal" type="obsolete">74-83/6</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c22-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Totstandkoming van een instructie- en mandaatregeling.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912116">1745</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1980-003(1330)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c23-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoeksprogramma van het RID 1981-1983 inzake personeelscapaciteit.</unittitle>
                      <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">25</unitid>
                    <unittitle>Het voorbereiden en vaststellen van het beleid betreffende automatisering.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID (1908-) 1913-1973 (-1975), p. 23, Benodigdheden en hulpmiddelen in het bijzonder voor de leiding Archiefinventaris RID (1960-) 1974-1983 ( 1984), p. 120, Automatisering.
</item>
                      <item>Product: Beleidsnota's, rapporten.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63912124">331</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/62</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c2b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Besprekingen inzake de mogelijkheden van automatisering.</unittitle>
                      <unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912125">1546</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1975-001(1173)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c2c-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Beschrijving van het computermodel met behulp waarvan voor een willekeurig gebied een optimale keuze kan worden gemaakt uit de in aanmerking komende waterwinprojecten en bijbehorende transportleidingen.</unittitle>
                      <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912126">1682</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1975-3(15) en R16-83/1975-7(17)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c2d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Toelichting bij de rekenprogramma's FLOP-1 en 2 en Front-1 opgesteld door ir. C. v.d. Akker.</unittitle>
                      <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912127">3028</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c2e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Overzicht van de operationele modellen en computerprogramma's in gebruik bij de Hydrologische Hoofdafdeling.</unittitle>
                      <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912128">3066</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c2f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Voorbereiding van de invoering van het Management Informatie Systeem bij het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912129">3053</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c30-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Invoering van het Management Informatie Systeem bij het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912130">3064</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c31-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslag van de Werkgroep PLANRID inzake de ontwikkeling van een planningssysteem voor projecten.</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912131">14</unitid>
                      <unitid audience="internal" type="obsolete">74-83/15</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c32-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Automatiseringsplan voor de jaren 1982-1985.</unittitle>
                      <unitdate calendar="gregorian" normal="1981/1984" era="ce">1981-1984</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912132">1399</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1983-001(1406)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c33-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>De automatisering van gaschromatografische analysesystemen.</unittitle>
                      <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">27</unitid>
                    <unittitle>Het voorbereiden en vaststellen van het beleid betreffende het archief en de bibliotheek</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID (1908-) 1913-1973 (-1975), p. 23, Registratuur en archief.<lb></lb>Archiefinventaris RID (1960) 1974-1983 (1984), p. 119, Archieven.
</item>
                      <item>Grondslag: Archiefbesluit (Stb. 1968, 200).<lb></lb>Archiefbesluit 1995 (Stb. 1995, 671).<lb></lb>Archiefwet 1995 (Stb. 1995, 276).<lb></lb>Instellingsbesluit Rijksbureau voor Drinkwatervoorziening (Stb. 1913, 216), art. 14.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>328-329</unitid>
                      <unittitle>Organisatie en inrichting van de archieven en de bibliotheek.</unittitle>
                      <unitdate calendar="gregorian" normal="1941/1973" era="ce">1941-1973</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63912142">328</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/65</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c3c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Organisatie,<unitdate calendar="gregorian" normal="1941/1973" era="ce">1941-1973</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912143">329</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/65</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c3d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Inrichting,<unitdate calendar="gregorian" normal="1946/1973" era="ce">1946-1973</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912144">9</unitid>
                      <unitid audience="internal" type="obsolete">74-83/11</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c3e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Richtlijnen voor het bewaren en vernietigen van archiefbescheiden.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1979" era="ce">1974-1979</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">29</unitid>
                    <unittitle>Het voorbereiden en vaststellen van het huisvestingsbeleid en het (gebruiks)goederenbeheer.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID (1960-) 1974-1983 ( 1984), p. 120, Gebouwen van bestuur, leiding en administratie.<lb></lb>Archiefinventaris RID (1960-) 1974-1983 ( 1984), p. 120, Automatisering.
</item>
                      <item>Product: Beleidsnota's, rapporten.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>11, 3274</unitid>
                      <unittitle>Nieuwbouw te Rijswijk.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1982" era="ce">1974-1982</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63912153">11</unitid>
                        <unitid audience="internal" type="obsolete">74-83/13, 14</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c47-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Voorbereiding en uitvoering,<unitdate calendar="gregorian" normal="1974/1980" era="ce">1974-1980</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912155">3274</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c48-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Tekeningen,<unitdate calendar="gregorian" normal="1974/1982" era="ce">1974-1982</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">32</unitid>
                    <unittitle>Het bevorderen en ondersteunen van de totstandkoming van drinkwater- en sanitaire voorzieningen in ontwikkelingslanden.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: International Reference Centre for Community Water Supply and Sanitation (IRC)</corpname>
                      </item>
                      <item>Bron: Jaarverslag RID 1972, p. 75 e.v.
</item>
                      <item>Product: Rapporten, correspondentie.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Diverse stukken van het IRC.</unittitle>
                      <unitdate calendar="gregorian" normal="1968/1982" era="ce">1968-1982</unitdate>
                    </did>
                    <odd>
                      <p>Ingesteld door de World Health organisation (WHO) en de Nederlandse regering in 1968</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63912166">2149</unitid>
                        <unitid audience="internal" type="obsolete">CA2/68-76(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c53-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Agenda's voor en verslagen van stafvergaderingen,<unitdate calendar="gregorian" normal="1970/1976" era="ce">1970-1976</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912167">22</unitid>
                        <unitid audience="internal" type="obsolete">74-83/10</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c54-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Correspondentie,<unitdate calendar="gregorian" normal="1972/1979" era="ce">1972-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912168">2931</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c55-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Correspondentie,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912169">2148</unitid>
                        <unitid audience="internal" type="obsolete">CA2/68-76(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c56-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Correspondentie met de World Health Organisation (WHO),<unitdate calendar="gregorian" normal="1970/1973" era="ce">1970-1973</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912170">17</unitid>
                        <unitid audience="internal" type="obsolete">74-83/20</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c57-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>De formatievaststelling,<unitdate calendar="gregorian" normal="1972/1975" era="ce">1972-1975</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912171">23</unitid>
                        <unitid audience="internal" type="obsolete">74-83/10</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c58-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Documentatie,<unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912172">2131</unitid>
                        <unitid audience="internal" type="obsolete">CA2/68-76(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c59-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Kwartaal- en jaarverslagen,<unitdate calendar="gregorian" normal="1968/1973" era="ce">1968-1973</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912173">18</unitid>
                        <unitid audience="internal" type="obsolete">74-83/23</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c5a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Omzetting naar een stichtingsvorm,<unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912174">19</unitid>
                        <unitid audience="internal" type="obsolete">74-83/24</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c5b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Project Biologische Langzame Zandfiltratie,<unitdate calendar="gregorian" normal="1975/1979" era="ce">1975-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912175">2144</unitid>
                        <unitid audience="internal" type="obsolete">CA2/68-76(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c5c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapporten,<unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">33</unitid>
                    <unittitle>Het voorbereiden van de totstandkoming, wijziging en intrekking van wet- en regelgevingbetreffende het beleidsterrein (drink)watervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Grondslag: Instellingsbesluit Rijksbureau voor Drinkwatervoorziening (Stb. 1913, 216).
</item>
                      <item>Product: Regelingen, wetten, nota's, adviezen.
</item>
                      <item>Opm.: De handelingen 293 en 295 in het BSD Milieubeheer met betrekking tot wet- en regelgeving door het Rijksbureau voor Drinkwatervoorziening passen in dit kader.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
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                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912236">353</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/80</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c91-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan het totstandkomen van het voorontwerp van de wet inzake de onderlinge hulpverlening door waterleidingbedrijven in buitengewone omstandigheden.</unittitle>
                      <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2205-2206</unitid>
                      <unittitle>De voorbereiding van een wettelijke regeling inzake de basisplannen voor de drinkwatervoorziening door de werkgroep Wetgeving Basisplannen.</unittitle>
                      <unitdate calendar="gregorian" normal="1968/1973" era="ce">1968-1973</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63912238">2205</unitid>
                        <unitid audience="internal" type="obsolete">C63-73(18)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c93-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1968 - 1972 juli<unitdate calendar="gregorian" normal="1968/1972" era="ce">1968-1972</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912239">2206</unitid>
                        <unitid audience="internal" type="obsolete">C63-73(18)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c94-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1972 aug. - 1973<unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912240">231</unitid>
                      <unitid audience="internal" type="obsolete">74-83/232</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c95-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Totstandkoming van de Algemene Grondwaterwet van 22 mei 1981, Stb. 392.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912241">58</unitid>
                      <unitid audience="internal" type="obsolete">74-83/70</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c96-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan de wijziging van de Wet Verontreiniging Oppervlaktewater van 13 november 1969, Staatsblad 536.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1978" era="ce">1973-1978</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912242">130</unitid>
                      <unitid audience="internal" type="obsolete">74-83/115</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c97-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Herzieningen met betrekking tot regelingen op het gebied van winnen, opslaan en overbrengen van water ten behoeve van de openbare watervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1981" era="ce">1973-1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63912243">122</unitid>
                      <unitid audience="internal" type="obsolete">74-83/105</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6c98-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Totstandkomen van de regeling inzake een voorstel tot samenwerking met het Keuringsinstituut voor Waterleidingsartikelen op het gebied van het onderzoek ten behoeve van de openbare watervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">34</unitid>
                    <unittitle>Het adviseren met betrekking tot het verlenen van Rijkssteun in door de oorlog getroffen gebieden.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Interdepartementale Commissie Rijkssteun Drinkwatervoorziening, tot 1949 Interdepartementale Commissie Drinkwatervoorziening Getroffen Gebieden</corpname>
                      </item>
                      <item>Bron: Jaarverslag RID 1946-1947, p. 4 en 1948-1949, p. 4, 1972, p. 5.
</item>
                      <item>Product: Rapporten.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>750, 2061</unitid>
                      <unittitle>Rapporten.</unittitle>
                      <unitdate calendar="gregorian" normal="1946/1951" era="ce">1946-1951</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63912252">750</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/194(392)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6ca1-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport inzake de drinkwatervoorziening van getroffen gebieden,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912253">2061</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(9)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6ca2-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport inzake de drinkwatervoorziening van onrendabele gebieden,<unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1946/1972" era="ce">1946-1972</unitdate>
                    </did>
                    <odd>
                      <p>Met hiaten</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63912258">2060</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(8)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6ca6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Agenda's van ingekomen en uitgegane stukken,<unitdate calendar="gregorian" normal="1949/1972" era="ce">1949-1972</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912259">2048</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6ca7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1946/1949" era="ce">1946-1949</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912260">2049</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6ca8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912261">2050</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6ca9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1951/1953" era="ce">1951-1953</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912262">2051</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6caa-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1954/1956" era="ce">1954-1956</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912263">2052</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6cab-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1957/1958" era="ce">1957-1958</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912264">2054</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(5)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6cac-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1959/1960" era="ce">1959-1960</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912265">2055</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(5)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6cad-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1961/1962" era="ce">1961-1962</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912266">2057</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6cae-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1963/1965" era="ce">1963-1965</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912267">2058</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6caf-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63912268">2059</unitid>
                        <unitid audience="internal" type="obsolete">CA2/46-72(7)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6cb0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1968/1972" era="ce">1968-1972</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">35</unitid>
                    <unittitle>Het voorbereiden en voorstellen van subsidieregelingen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Interdepartementale Commissie Rijkssteun Drinkwatervoorziening, tot 1949 Interdepartementale Commissie Drinkwatervoorziening Getroffen Gebieden</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Opm.: Wetsvoorstellen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63912277">1163</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/194(794)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6cb8-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de drinkwatervoorziening van onrendabele gebieden (Regeling Subsidie Verspreide Percelen) alsmede een nota inzake het voorstel van de Staatssecretaris van Sociale Zaken en Volksgezondheid tot het doen aflopen van de Regeling Subsidie Verspreide Percelen.</unittitle>
                      <unitdate calendar="gregorian" normal="1960/1962" era="ce">1960-1962</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">36</unitid>
                    <unittitle>Het adviseren omtrent de vraag of een wettelijke voorziening op gebied van de drinkwatervoorziening gewenst is.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie inzake een Wettelijke Regeling voor de Drinkwatervoorziening</corpname>
                      </item>
                      <item>Grondslag: Instellingsbeschikking (Stcrt. 1949, 177).
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2062, 2065-2067</unitid>
                      <unittitle>Vergaderstukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1949/1960" era="ce">1949-1960</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904759">2067</unitid>
                        <unitid audience="internal" type="obsolete">CA2/49-60(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51d9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Agenda's,<unitdate calendar="gregorian" normal="1949/1960" era="ce">1949-1960</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904760">2062</unitid>
                        <unitid audience="internal" type="obsolete">CA2/49-60(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51da-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1949/1956" era="ce">1949-1956</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904761">2065</unitid>
                        <unitid audience="internal" type="obsolete">CA2/49-60(1-2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51db-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904762">2066</unitid>
                        <unitid audience="internal" type="obsolete">CA2/49-60(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51dc-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1958/1960" era="ce">1958-1960</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">38</unitid>
                    <unittitle>Het treffen van maatregelen met betrekking tot de drinkwatervoorziening in oorlogstijd.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie Bescherming Waterbedrijven met het oog op Oorlogsomstandigheden</corpname>
                      </item>
                      <item>Bron: 'Bescherming waterbedrijven met het oog op oorlogsomstandigheden', Ministerie van Binnenlandse Zaken en<lb></lb>het Ministerie van Sociale Zaken en Volksgezondheid, Den Haag, 1955.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1954/1971" era="ce">1954-1971</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904771">2069</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51e4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1954/1956" era="ce">1954-1956</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904772">2070</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51e5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904773">2071</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51e6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904774">2072</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51e7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904775">2074</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51e8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904776">2076</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51e9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904777">2077</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51ea-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904778">2078</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51eb-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904779">2079</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51ec-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904780">2080</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51ed-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1965 jan.- juni<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904781">2082</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(5)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51ee-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1965 juli - dec.<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904782">2084</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(5)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51ef-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1966 jan. - juni<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904783">2085</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(5)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1966 juli - dec.<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904784">2086</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(5-6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f1-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904785">2088</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f2-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904786">2089</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f3-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904787">2090</unitid>
                      <unitid audience="internal" type="obsolete">CA2/54-73(7)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f4-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Agenda's van ingekomen en uitgegane stukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1954/1973" era="ce">1954-1973</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2102-2103</unitid>
                      <unittitle>Vergaderstukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1955/1968" era="ce">1955-1968</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904790">2102</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(8)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1955/1960" era="ce">1955-1960</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904791">2103</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(8)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1961/1968" era="ce">1961-1968</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Beschermingsplannen voor waterleidingbedrijven in diverse gemeenten, gebieden en landen van de Werkgroep Beschermingsplannen.</unittitle>
                      <unitdate calendar="gregorian" normal="1955/1969" era="ce">1955-1969</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904793">2105</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(10)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51f9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Almelo-Delft,<unitdate calendar="gregorian" normal="1956/1969" era="ce">1956-1969</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904794">2108</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(11)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51fa-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Denemarken-Helmond,<unitdate calendar="gregorian" normal="1956/1962" era="ce">1956-1962</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904795">2109</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(12)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51fb-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Hengelo-Kerkrade,<unitdate calendar="gregorian" normal="1956/1962" era="ce">1956-1962</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904796">2110</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(13)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51fc-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Midden-Zeeland-Roosendaal en Nispen,<unitdate calendar="gregorian" normal="1956/1961" era="ce">1956-1961</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904797">2111</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(14)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51fd-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rotterdam-Velsen,<unitdate calendar="gregorian" normal="1955/1961" era="ce">1955-1961</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904798">2114</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(15)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51fe-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Venlo-Vlietstreek,<unitdate calendar="gregorian" normal="1956/1960" era="ce">1956-1960</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904799">2115</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(15)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-51ff-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Weert-Zuid-Limburg,<unitdate calendar="gregorian" normal="1955/1960" era="ce">1955-1960</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2116-2117</unitid>
                      <unittitle>Chemisch Technische Subcommissie.</unittitle>
                      <unitdate calendar="gregorian" normal="1955/1970" era="ce">1955-1970</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904801">2116</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(17)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5201-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1955/1966" era="ce">1955-1966</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904802">2117</unitid>
                        <unitid audience="internal" type="obsolete">CA2/54-73(18)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5202-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Ingekomen en uitgegane stukken,<unitdate calendar="gregorian" normal="1964/1970" era="ce">1964-1970</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904803">2104</unitid>
                      <unitid audience="internal" type="obsolete">CA2/54-73(9)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5203-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Handleidingen en instructies voor bezoeken aan waterleidingbedrijven.</unittitle>
                      <unitdate calendar="gregorian" normal="1956/1967" era="ce">1956-1967</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904804">2118</unitid>
                      <unitid audience="internal" type="obsolete">CA2/54-73(19)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5204-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslag van een dienstreis naar Engeland van de commissieleden J.G. Fikken en J.J.Bijker.</unittitle>
                      <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904805">2120</unitid>
                      <unitid audience="internal" type="obsolete">CA2/54-73(20)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5205-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Ingekomen en uitgegane stukken van de Werkgroep Herziening Richtlijnen.</unittitle>
                      <unitdate calendar="gregorian" normal="1965/1972" era="ce">1965-1972</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">39</unitid>
                    <unittitle>Het adviseren omtrent de vraag of het wenselijk is dat nadere wettelijke maatregelen worden genomen ter bescherming van de kwaliteit van het grondwater tegen verontreiniging door aardolieproducten en chemische stoffen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie Bescherming Waterwingebieden/Grondwaterkwaliteit</corpname>
                      </item>
                      <item>Grondslag: Besluit d.d. 9 oktober 1962/Nr. 14267/ Directie Volksgezondheid, Afdeling gezondheidsbescherming (Stcrt. 1962, 200).
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2127-2129</unitid>
                      <unittitle>Vergaderstukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1962/1972" era="ce">1962-1972</unitdate>
                    </did>
                    <odd>
                      <p>Met hiaten</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63904817">2127</unitid>
                        <unitid audience="internal" type="obsolete">CA2/62-77(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5210-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1962/1966" era="ce">1962-1966</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904818">2128</unitid>
                        <unitid audience="internal" type="obsolete">CA2/62-77(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5211-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1967/1969" era="ce">1967-1969</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904819">2129</unitid>
                        <unitid audience="internal" type="obsolete">CA2/62-77(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5212-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1970/1972" era="ce">1970-1972</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904820">2132</unitid>
                      <unitid audience="internal" type="obsolete">CA2/62-77(5)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5213-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenstelling en opheffing.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904821">2130</unitid>
                      <unitid audience="internal" type="obsolete">CA2/62-77(4)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5214-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Agenda's van ingekomen en uitgegane stukken van de Commissie Bescherming Grondwaterkwaliteit en de Subcommissies I en II.</unittitle>
                      <unitdate calendar="gregorian" normal="1962/1973" era="ce">1962-1973</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2133-2134</unitid>
                      <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904823">2134</unitid>
                        <unitid audience="internal" type="obsolete">CA2/62-77(7)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5216-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Subcommissie Documentatie (Subcommissie II),<unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904824">2133</unitid>
                        <unitid audience="internal" type="obsolete">CA2/62-77(6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5217-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Subcommissie Bestudering van de Schadelijkheid van Aardolieproducten en Chemische Stoffen (Subcommissie I),<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">41</unitid>
                    <unittitle>Het opstellen van periodieke verslagen over het beleidsterrein (drink) watervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID, p. 21, Verslagen, gedenkschriften, algemene rapporten, algemene statistieken en overzichten betreffende het orgaan.
</item>
                      <item>Grondslag: Instellingsbesluit Rijksbureau voor Drinkwatervoorziening (Stb. 1913, 216), art. 11.
</item>
                      <item>Product: Periodieke rapportages waaronder jaarverslagen, correspondentie.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Jaarverslagen.</unittitle>
                    </did>
                    <odd>
                      <p>De jaarverslagen van 1913-1919 zijn gezamenlijk opgemaakt met de Centrale Commissie voor Drinkwatervoorziening</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63904836">304</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/42</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5223-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1913/1920" era="ce">1913-1920</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904837">305</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/42</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5224-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1921/1922" era="ce">1921-1922</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904838">306</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/43</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5225-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1923/1924" era="ce">1923-1924</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904839">307</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/43</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5226-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1925/1926" era="ce">1925-1926</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904840">308</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/44</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5227-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1927/1928" era="ce">1927-1928</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904841">309</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/44</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5228-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1929/1936" era="ce">1929-1936</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904842">311</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/45</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5229-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1937/1941" era="ce">1937-1941</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904843">313</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/45</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-522a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1942/1957" era="ce">1942-1957</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                      <odd>
                        <p>De jaarverslagen van 1944-1949 ontbreken</p>
                      </odd>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904847">315</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/46</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-522d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1958/1966" era="ce">1958-1966</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904848">316</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/46</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-522e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1967/1973" era="ce">1967-1973</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904849">20</unitid>
                        <unitid audience="internal" type="obsolete">74-83/26</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-522f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1974/1979" era="ce">1974-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904850">21</unitid>
                        <unitid audience="internal" type="obsolete">74-83/26</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5230-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904851">1437</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/026(1430)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5231-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslag omtrent de werkzaamheden van het Rijksbureau voor Drinkwatervoorziening en van de Centrale Commissie voor Drinkwatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1918" era="ce">1918</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904852">314</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/48</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5232-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Jaarverslag 1971 en Werkprogramma 1972 van het Stafbureau Planning en een rapport van de Chemisch-Biologische Afdeling.</unittitle>
                      <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904853">3125</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5233-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslag van de directeur over de stand van zaken ultimo augustus 1972.</unittitle>
                      <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904854">2892</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5234-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Kwartaalverslagen van de Economische- en Juridische Afdeling.</unittitle>
                      <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Hoofdafdelingen Geohydrologie en Hydrologie.</unittitle>
                      <unitdate calendar="gregorian" normal="1972/1983" era="ce">1972-1983</unitdate>
                    </did>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2755, 2806</unitid>
                        <unittitle>Geohydrologische Afdeling.<unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904857">2806</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5237-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kwartaalverslagen,<unitdate calendar="gregorian" normal="1972/1974" era="ce">1972-1974</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904858">2755</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5238-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Hydrologische Hoofdafdeling.<unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                        </unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2807, 3097</unitid>
                          <unittitle>Kwartaalverslagen.<unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904861">2807</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-523b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904862">3097</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-523c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2754, 2758-2759</unitid>
                          <unittitle>Stafvergaderingen; verslagen.<unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904864">2758</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-523e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1978 mei - 1980 apr.<unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904865">2759</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-523f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1980 juni - 1981 mei<unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904866">2754</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5240-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1981 aug. - 1983 feb.<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </unittitle>
                        </did>
                        <odd>
                          <p>Numeriek geordend</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63904870">3099</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5244-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 001 - 042,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904871">3098</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5245-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 001 - 104,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904873">2961</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5246-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 105 - 130,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904874">2960</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5247-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 001 - 099,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904875">2805</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5248-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 100 - 205,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904876">2756</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5249-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 076 - 175,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904877">2897</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-524a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 001 - 076,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904878">2898</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-524b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 077 - 204,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Chemisch Biologische Hoofdafdeling.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904880">3057</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-524d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Kwartaalverslagen,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>3119-3120, 3131</unitid>
                        <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </unittitle>
                      </did>
                      <odd>
                        <p>Niet compleet</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63904884">3119</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5251-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>CBH 201 - 300,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904885">3120</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5252-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>CBH 301 - 400,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904886">3131</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5253-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>CBH 401 - 528,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Technische Hoofdafdeling.</unittitle>
                      <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904888">3050</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5255-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Kwartaalrapporten,<unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2757, 3096</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904890">2757</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5257-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1981.</unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904891">3096</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5258-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1982 juli - dec..</unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">42</unitid>
                    <unittitle>Het deelnemen aan adviescommissies en overleg waarvan het voorzitterschap en/of secretariaat bij het Rijksinstituut voor Drinkwatervoorziening (voorheen Rijksbureau voor Drinkwatervoorziening) berust.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Verslagen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Vergaderstukken van de Commissie voor Hydrologisch Onderzoek van de Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek (TNO).</unittitle>
                      <unitdate calendar="gregorian" normal="1944/1983" era="ce">1944-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904900">3107</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5261-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1944/1947" era="ce">1944 - 1947 mei</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="65486105">2882</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/857327d3-fa4f-5cc5-e053-09f0900a2b1a</unitid>
                        <unittitle>Ontvangen door prof. W.F.J. &lt;rull als lid van de commissie, <unitdate calendar="gregorian" era="ce">1946-1950</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904901">3108</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5262-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1947/1950" era="ce">1947 juni -1950 april</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904902">2691</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5263-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1950/1952" era="ce">1950 mei -1952 januari</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904904">2692</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5264-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1952/1953" era="ce">1952 februari -1953 juni</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904905">2693</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5265-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1953/1955" era="ce">1953 juli - 1955 december</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904906">2694</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5266-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1956/1957" era="ce">1956 jan. - 1957 mrt.</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904907">2698</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5267-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1957/1958" era="ce">1957 apr. - 1958 okt.</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904908">2699</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5268-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1958/1960" era="ce">1958 nov. - 1960 mei</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904909">2695</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5269-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1960/1963" era="ce">1960 juni - 1963 aug.</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904910">2899</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-526a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1963/1967" era="ce">1963 sep. - 1967 okt.</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904911">2900</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-526b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968 jan. - 1969 dec.</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904912">2896</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-526c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1970/1973" era="ce">1970 feb. - 1973 mei</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="65486106">2965</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/857327d3-fa50-5cc5-e053-09f0900a2b1a</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973 juni - 1977 junii</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904913">2863</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-526d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981 jan. - 1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904914">2696</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-526e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Voorbereidingscommissie voor de Technische Bijeenkomst met het thema de Internationale Water Decade,<unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904915">3239</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-526f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Voorbereidingscommissie voor de Technische Bijeenkomst met als thema Planvorming Regionaal Waterbeheer,<unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904916">2697</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5270-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Studiebijeenkomst met als thema Grondwaterkwaliteit in relatie met onderzoek en beleid,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>3007-3018</unitid>
                        <unittitle>Klein Comité van de Commissie voor Hydrologisch Onderzoek TNO.<unitdate calendar="gregorian" normal="1969/1983" era="ce">1969-1983</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904918">3007</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5272-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1969/1973" era="ce">1969-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904919">3008</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5273-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1974/1975" era="ce">1974-1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904920">3009</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5274-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904922">3010</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5275-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904923">3011</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5276-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1980 jan. - aug.<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904924">3012</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5277-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1980 okt. - dec.<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904925">3013</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5278-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1981 feb. - juni<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904926">3014</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5279-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1981 aug. - dec.<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904927">3015</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-527a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1982 feb. - okt.<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904928">3018</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-527b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1982 dec.<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904929">3016</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-527c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1983 feb. - juni<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904930">3017</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-527d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1983 aug. - nov.<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2884-2885</unitid>
                      <unittitle>Commissie inzake Onderzoek van de Waterstandsverlaging ten gevolge van de Tunnelbouw te Velsen.</unittitle>
                      <unitdate calendar="gregorian" normal="1950/1956" era="ce">1950-1956</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904932">2884</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-527f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1950 - 1953 nov.<unitdate calendar="gregorian" normal="1950/1953" era="ce">1950-1953</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904933">2885</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5280-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1953 dec. - 1956<unitdate calendar="gregorian" normal="1953/1956" era="ce">1953-1956</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2808-2809, 2858</unitid>
                      <unittitle>Commissie van Beheer van het Archief van Grondwaterstanden van de Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek (TNO).</unittitle>
                      <unitdate calendar="gregorian" normal="1955/1968" era="ce">1955-1968</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904935">2808</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5282-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1955 okt. - 1958 mrt.<unitdate calendar="gregorian" normal="1955/1958" era="ce">1955-1958</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904936">2809</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5283-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1958 juli - 1960 dec.<unitdate calendar="gregorian" normal="1958/1961" era="ce">1958-1961</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904937">2858</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5284-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1961 jan. - 1968 juli<unitdate calendar="gregorian" normal="1961/1968" era="ce">1961-1968</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Technische Werkgroep Watervoorziening in de Provincie Overijssel.</unittitle>
                      <unitdate calendar="gregorian" normal="1963/1976" era="ce">1963-1976</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904940">2776</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5286-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1963/1965" era="ce">1963-1965</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904941">2723</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5287-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Subgroep Basisplannen (2000); vergaderstukken,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Werkgroep Hydrologisch Onderzoek Overijssel.<unitdate calendar="gregorian" normal="1969/1976" era="ce">1969-1976</unitdate>
                        </unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2721-2722, 2861</unitid>
                          <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1969/1976" era="ce">1969-1976</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63904944">2721</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-528a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1969/1970" era="ce">1969-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904945">2722</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-528b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1971/1972" era="ce">1971-1972</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63904946">2861</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-528c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904947">1510</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1974-010(1143)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-528d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Subwerkgroep C; rapport Geohydrochemie van het jong-pleistoceen in Salland in relatie tot de topografie en de geohydrologie,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904948">1513</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1974-011(1144)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-528e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Subwerkgroep C; Verslag van de werkzaamheden en resultaten van de geohydrologische verkenning van Salland,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904949">2852</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-528f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Subwerkgroep D; vergaderstukken,<unitdate calendar="gregorian" normal="1969/1975" era="ce">1969-1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904950">2801</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5290-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Studiegroep voor Geohydrologisch Onderzoek in Zuidelijk Flevoland en de Gelderse Vallei.</unittitle>
                      <unitdate calendar="gregorian" normal="1971/1977" era="ce">1971-1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904951">2871</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5291-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Westerwolde met als taak bestudering van de winningsmogelijkheden van grondwater in Zuid-Oost Groningen.</unittitle>
                      <unitdate calendar="gregorian" normal="1972/1974" era="ce">1972-1974</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904952">2938</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5292-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Coördinatiegroep Geohydrologisch Onderzoek Groningen.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904953">2711</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5293-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Projectgroep Infiltratie Oevergrondwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904954">1545</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1975-001(1172)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5294-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Inventarisatie van de Werkgroep Technische Aspecten Bekkens van bestaande gegevens en de begeleiding van het benodigde onderzoek voor het aanleggen van bekkens.</unittitle>
                      <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                  <c level="file">
                    <did>
                      <unitid identifier="63904955">2767</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5295-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Commissie Vlokvorming en Vlokverwijdering met als taak het verrichten van onderzoek met betrekking tot het verwerken van slib dat bij drinkwaterbereidingsprocessen vrijkomt.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904957">2869</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5296-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Contactgroep Grondwaterbeheer Grensstreek Nederland-België.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904958">2752</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5297-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Waterwingebieden van de Subcommissie Boven- en Ondergrondse Opslag.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2730-2731</unitid>
                      <unittitle>Projectgroep Milieu-Effect Rapportage Zuid-Kennermerland.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904960">2730</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5299-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904961">2731</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-529a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904962">2972</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-529b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Programmagroep 4 van de Nederlandse Vereniging voor Afvalwaterbehandeling en Waterkwaliteitsbeheer.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904963">2753</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-529c-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Begeleidingscommissie Hydrologisch Onderzoek Waterwinning Oirschot.</unittitle>
                      <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">43</unitid>
                    <unittitle>Het deelnemen aan adviescommissies en overleg waarvan het voorzitterschap en/of secretariaat niet bij het RID berust.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Algemene handelingen Nationaal Archief.<lb></lb>Jaarverslagen RID.
</item>
                      <item>Product: Verslagen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2782-2783</unitid>
                      <unittitle>Commissie tot Onderzoek van de Organisatie der Drinkwatervoorziening in Gelderland.</unittitle>
                      <unitdate calendar="gregorian" normal="1918/1958" era="ce">1918-1958</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904973">2782</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52a5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1918/1948" era="ce">1918-1948</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904974">2783</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52a6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1949/1958" era="ce">1949-1958</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>3019-3020</unitid>
                      <unittitle>Commissie Zoutgehalte Noord-Holland.</unittitle>
                      <unitdate calendar="gregorian" normal="1931/1942" era="ce">1931-1942</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904976">3020</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52a8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1931/1940" era="ce">1931-1940</unitdate>
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                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904977">3019</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52a9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1941/1942" era="ce">1941-1942</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2829-2830, 2878</unitid>
                      <unittitle>Nederlandse Bodemkundige Vereniging.</unittitle>
                      <unitdate calendar="gregorian" normal="1932/1946" era="ce">1932-1946</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904979">2878</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ab-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1932/1935" era="ce">1932-1935</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904980">2829</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ac-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1936/1939" era="ce">1936-1939</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904981">2830</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ad-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1940/1946" era="ce">1940-1946</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Hoofdcommissie voor de Normalisatie in Nederland (H.C.N.N.) van het Centraal Normalisatie Bureau (C.N.B.).</unittitle>
                      <unitdate calendar="gregorian" normal="1933/1966" era="ce">1933-1966</unitdate>
                    </did>
                    <odd>
                      <p>Rijksinstituut voor Drinkwatervoorziening heeft van de Commissie 38 het voorzitterschap</p>
                    </odd>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>3105-3106</unitid>
                        <unittitle>Commissie 27 (Algemene voorschriften voor dienstleidingen en binnenaanleg voor water, later Voorschriften voor drinkwaterinstallaties).<unitdate calendar="gregorian" normal="1933/1966" era="ce">1933-1966</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904986">3105</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52b2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1933/1946" era="ce">1933-1946</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904988">3106</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52b3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1947/1966" era="ce">1947-1966</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2872-2873</unitid>
                        <unittitle>Commissie 38 (Classificatie en benamingen van grondsoorten).<unitdate calendar="gregorian" normal="1933/1935" era="ce">1933-1935</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63904990">2872</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52b5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1933/1934" era="ce">1933-1934</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63904991">2873</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52b6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904992">2709</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52b7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Commissie 38a (Classificatie en benamingen van zwaardere grondsoorten),<unitdate calendar="gregorian" normal="1939/1950" era="ce">1939-1950</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2804, 2880</unitid>
                      <unittitle>Commissie inzake Waterverontreiniging.</unittitle>
                      <unitdate calendar="gregorian" normal="1934/1942" era="ce">1934-1942</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63904994">2804</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52b9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1934/1935" era="ce">1934-1935</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63904995">2880</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ba-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1936/1942" era="ce">1936-1942</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904996">3021</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52bb-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Commissie van Advies inzake Drinkwatervoorziening in Zuid-Holland.</unittitle>
                      <unitdate calendar="gregorian" normal="1939/1952" era="ce">1939-1952</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63904997">795</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/261(358)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52bc-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Commissie Waterwinning in Zuid-Limburg.</unittitle>
                      <unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Commissies van Rijkswaterstaat.</unittitle>
                      <unitdate calendar="gregorian" normal="1941/1983" era="ce">1941-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905000">2883</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52be-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Raad voor de Waterhuishouding en haar subcommissies,<unitdate calendar="gregorian" normal="1941/1946" era="ce">1941-1946</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905001">2886</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52bf-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Commissie Waterontrekking Noord-Holland,<unitdate calendar="gregorian" normal="1963/1964" era="ce">1963-1964</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905002">2787</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Wateronttrekkingscommissie Drechttunnel en Kiltunnel inzake de bouw van de Drechttunnel,<unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2975-2976</unitid>
                        <unittitle>Commissie Koelwaternormen.<unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
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                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63905004">2975</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
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                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905005">2976</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapporten,<unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2955-2956</unitid>
                      <unittitle>Waterraad voor Zuid-Limburg.</unittitle>
                      <unitdate calendar="gregorian" normal="1948/1959" era="ce">1948-1959</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905007">2955</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1948/1952" era="ce">1948-1952</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905009">2956</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1953/1959" era="ce">1953-1959</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905010">2700</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c7-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Provinciale Commissie inzake de Drinkwatervoorziening in de Provincie Utrecht en haar Technische Adviescommissie.</unittitle>
                      <unitdate calendar="gregorian" normal="1953/1958" era="ce">1953-1958</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905012">1119</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/322(753)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52c8-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Technische Commissie van de Drinkwatervoorziening inzake de toekomstige behoeften aan drinkwater in de provincie Noord-Brabant.</unittitle>
                      <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2977-2980</unitid>
                      <unittitle>Vergaderstukken van de Commissie Voorlichting Fluoridering Drinkwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1960/1974" era="ce">1960-1974</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905014">2977</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ca-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1960/1961" era="ce">1960-1961</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905015">2978</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52cb-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905016">2979</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52cc-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1964/1967" era="ce">1964-1967</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905017">2980</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52cd-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1968/1974" era="ce">1968-1974</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905018">2984</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ce-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep ter Bestudering van het Vraagstuk van de Fusering der Waterleidingbedrijven in Limburg (uit de Waterleidingcommissie voor Limburg).</unittitle>
                      <unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905019">2985</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52cf-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Contactgroep Waterhuishouding Limburg en Noord-Brabant en haar werkgroepen.</unittitle>
                      <unitdate calendar="gregorian" normal="1969/1974" era="ce">1969-1974</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905020">2959</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d0-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Waterwingebieden van de Commissie voor Fytofarmacie.</unittitle>
                      <unitdate calendar="gregorian" normal="1970/1975" era="ce">1970-1975</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2940-2941</unitid>
                      <unittitle>Werkgroep Voorbereiding Projecten Watervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905022">2940</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d2-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Nrs. 01 - 18,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905023">2941</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d3-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Nrs. 19 - 32,<unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905024">2870</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d4-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Referentietechniek met als taak het uitwerken van beoordelingscriteria wanneer op alternatieve waterwinningsmethoden dient te worden overgegaan die geen schade aan de landbouw  veroorzaken.</unittitle>
                      <unitdate calendar="gregorian" normal="1972/1974" era="ce">1972-1974</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905025">2954</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d5-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Commissie voor de Waterhuishouding.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905026">2947</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d6-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Projectgroep Brielse Meer met als taak het uitvoeren van een defosfateringsproef op praktijkschaal in het Brielse Meer.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Commissie Bestudering Waterhuishouding Gelderland.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905029">2945</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van de werkgroep van de Commissie Bestudering Waterhuishouding Gelderland,<unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905030">2862</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52d9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Stuurgroep van de Commissie Bestudering Waterhuishouding Gelderland,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905031">2853</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52da-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Werkgroep Uitbreiding Waterwinning Fikkersdries,<unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905032">2944</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52db-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Diverse werk- en studiegroepen,<unitdate calendar="gregorian" normal="1976/1980" era="ce">1976-1980</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905033">1751</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1980-006(1337)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52dc-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport de samenstelling van het in de Achterhoek gewonnen grondwater opgesteld door W. van Duijvenbooden,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905034">2952</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52dd-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Technische Commissie Watervoorziening uit het IJsselmeer.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2704, 2874</unitid>
                      <unittitle>Commissie van Advies voor de Rijks Geologische Dienst.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905036">2874</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52df-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905037">2704</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905038">2937</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e1-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met de Geohydrologische Werkgroep Emmen.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905039">2939</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e2-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Wateronttrekking Gelderse Vallei (Glindhorst).</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905040">2702</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e3-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Coördinatiegroep Industrieel Koelwatergebruik.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1980" era="ce">1976-1980</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905041">2967</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e4-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Subgroep Hydrologisch Onderzoek Grindgaten Midden-Limburg.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1980" era="ce">1976-1980</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2825-2827</unitid>
                      <unittitle>Commissie Openbare Watervoorziening en Grondwaterbeheer Utrecht, later Provinciale Grondwatercommissie Utrecht.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905043">2825</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2826-2827</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63905045">2826</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1977 - 1980.</unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905046">2827</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52e9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1981 - 1983.</unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905047">2766</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ea-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Contactgroep Archivering en Automatische Verwerking Hydrologische Gegevens.</unittitle>
                      <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905048">2768</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52eb-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Overleggroep Beheer Duingebied 's-Gravenhage - Katwijk.</unittitle>
                      <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905050">3083</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ec-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Voorlopige Begeleidingscommissie voor de Infiltratie en Winning door de Leidsche Duinwater Maatschappij (L.D.M.) in het gebied Katwijk/Wassenaar.</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2843, 3103-3104</unitid>
                      <unittitle>Commissie Concentratie Nutsbedrijven (CoCoNut).</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905052">3103</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ee-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Onderzoeksopdracht aan organisatie-adviesbureau en commentaar op haar onderzoeksvoorstel,<unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905053">3104</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52ef-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905054">2843</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Bijdrage aan het eindadvies van de CoCoNut,<unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2707-2708, 2860</unitid>
                      <unittitle>Provinciale Waterstaat van Drenthe.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                    </did>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2707-2708</unitid>
                        <unittitle>Technische Werkgroep Grondwaterplan.<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63905057">2708</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905058">2707</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905059">2860</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Werkgroep De Groeve,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2736-2737</unitid>
                      <unittitle>Technische Werkgroep Panheel.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905061">2736</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Taak, samenstelling en werkwijze,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905062">2737</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905063">2837</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52f9-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Begeleidingsgroep voor Modellering van aspecten betreffende de openbare watervoorziening in PAWN (Policy Analysis of the Watermanagement in the Netherlands).</unittitle>
                      <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905064">2747</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52fa-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Eindrapport van de Informele Groep Verdamping in het kader van het onderzoek naar de gevolgen van waterbeheersmaatregelen voor de verdamping en gewasproductie.</unittitle>
                      <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905066">2958</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52fb-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Projectgroep Reorganisatiecriteria met als taak het opstellen van toetsingscriteria voor organisatie en reorganisatie van openbare drinkwatervoorziening in Nederland.</unittitle>
                      <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905067">2738</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52fc-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Stuur - en Projectgroep Hydrologisch Onderzoek Centrale Slenkgebied in Noord-Brabant.</unittitle>
                      <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905068">2876</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-52fd-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Stuurgroep Kustuitbreiding Zuid-Holland; Werkgroep Waterhuishouding.</unittitle>
                      <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">44</unitid>
                    <unittitle>Het instellen, wijzigen en opheffen van organisatie-eenheden op het beleidsterrein (drink) watervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Algemene handelingen Nationaal Archief.
</item>
                      <item>Product: Instellingsbeschikkingen, opheffingsbesluiten.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905076">320</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/55</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5305-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Overleg betreffende de taakverdeling tussen het Rijksinstituut voor Volksgezondheid en het RID omtrent het hygiënisch toezicht op de drinkwatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1917/1945" era="ce">1917-1945</unitdate>
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                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2-5, 319</unitid>
                      <unittitle>Organisatie en reorganisatie van het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1950/1983" era="ce">1950-1983</unitdate>
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                    <c level="file">
                      <did>
                        <unitid identifier="63905078">319</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/51</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5307-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1950/1973" era="ce">1950-1973</unitdate>
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                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905079">2</unitid>
                        <unitid audience="internal" type="obsolete">74-83/2</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5308-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905080">3</unitid>
                        <unitid audience="internal" type="obsolete">74-83/3</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5309-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905081">4</unitid>
                        <unitid audience="internal" type="obsolete">74-83/4</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-530a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905082">5</unitid>
                        <unitid audience="internal" type="obsolete">74-83/5</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-530b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
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                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
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                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
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                      <unitid>div.nrs.</unitid>
                      <unittitle>Reorganisatie van de afdelingen van het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1958/1981" era="ce">1958-1981</unitdate>
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                    <c level="file">
                      <did>
                        <unitid identifier="63905085">321</unitid>
                        <unitid audience="internal" type="obsolete">A13-73/52</unitid>
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                        <unittitle>Organisatie en reorganisatie van de Afdeling Bijzondere Onderwerpen,<unitdate calendar="gregorian" normal="1958/1961" era="ce">1958-1961</unitdate>
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                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>322, 2845-2846</unitid>
                        <unittitle>Geohydrologische Afdeling, afdelingsleiding.<unitdate calendar="gregorian" normal="1966/1979" era="ce">1966-1979</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63905087">322</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/53</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-530f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1966/1971" era="ce">1966-1971</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63905088">2845</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5310-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
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                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905089">2846</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5311-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
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                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905090">1406</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/220(1087)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5312-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Organisatie en opzet van de Chemisch-Biologische Afdeling,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905091">2847</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5313-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Hydrologische Hoofdafdeling, staf,<unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
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                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905092">12</unitid>
                        <unitid audience="internal" type="obsolete">74-83/12</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5314-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Instelling van de Raad van Adviseurs van de Chemisch Biologische Hoofdafdeling vanwege de taakverbreding na de reorganisatie,<unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
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                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>3077, 3086</unitid>
                      <unittitle>Onderzoek naar de toekomstige ontwikkeling en organisatie van het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1977/1981" era="ce">1977-1981</unitdate>
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                    <c level="file">
                      <did>
                        <unitid identifier="63905094">3077</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5316-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
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                      </did>
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                    <c level="file">
                      <did>
                        <unitid identifier="63905095">3086</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5317-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905096">3076</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5318-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Rapport van de Projectgroep Organisatie en Advieswerkzaamheden voor Derden met betrekking tot enkele mogelijkheden voor het onderbrengen van het thans door het RID verrichte waterleiding-technisch advieswerk en hun effecten.</unittitle>
                      <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>1, 3051</unitid>
                      <unittitle>Opheffing van het RID en het samengaan van het Rijksinstituut voor de Volksgezondheid, het Instituut voor Afvalstoffenonderzoek en het RID in het nieuwe Rijksinstituut voor Volksgezondheid en Milieuhygiëne (RIVM).</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                    </did>
                    <odd>
                      <p>Niet nader onder te verdelen</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63905100">1</unitid>
                        <unitid audience="internal" type="obsolete">74-83/8</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-531c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905101">3051</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-531d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905103">3023</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-531e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Organisatie-ontwikkeling binnen de RID met betrekking tot de projectgebonden werkwijze en het presenteren van milieu-informatie.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
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                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905104">1305</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1981-008(1359)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-531f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Taken van het RID in de voorbereiding en de begeleiding van de uitvoering van rioleringswerken in stadsvernieuwingsgebieden door ing. A. Gerlofsma en ir. W. Sauer.</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905105">7</unitid>
                      <unitid audience="internal" type="obsolete">74-83/7</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5320-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Correspondentie met het Directoraat-generaal voor de Milieuhygiëne over de positie van het RID bij de overgang van het Directoraat-generaal Milieuhygiëne naar het Ministerie van Volkshuisvesting, Ruimtelijke Ordening en Milieuhygiëne.</unittitle>
                      <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905106">3130</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5321-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslagen van de discussies over plaats en structuur van mathematisch werk binnen het RID.</unittitle>
                      <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
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                  <c level="file">
                    <did>
                      <unitid identifier="63905107">3078</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5322-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Visie op de organisatorische ontwikkeling van het RID op middellange termijn; een strategische verkenning.</unittitle>
                      <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
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                  <c level="file">
                    <did>
                      <unitid identifier="63905108">3087</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5323-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Inventarisatie van de milieuhygiënische taakvelden voor een Rijksinstituut voor Volksgezondheid en Milieuhygiëne (RIVM) en daarvoor bruikbare organisatievormen.</unittitle>
                      <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">45</unitid>
                    <unittitle>Het instellen, wijzigen en opheffen van commissies, werkgroepen, etc. op het terrein van de drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Algemene handelingen Nationaal Archief.
</item>
                      <item>Product: Instellingsbesluiten.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905116">336</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/41</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-532b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Instelling en werkzaamheden van de Staatscommissie voor Drinkwatervoorziening, het Rijksbureau en Rijksinstituut voor Drinkwatervoorziening en de Centrale Commissie voor Drinkwatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1909/1968" era="ce">1909-1968</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905117">2742</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-532c-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Oprichting van regionale werkgroepen in verband met de opstelling van tienjarenplannen voor de openbare watervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905118">1769</unitid>
                      <unitid audience="internal" type="obsolete">CA/23-83(1)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-532d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Commissiebestand: over de instelling, de opheffing, de samenstelling en de taakomschrijving van de commissies waarin het RID participeerde.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">51</unitid>
                    <unittitle>Het mede voorbereiden van het vaststellen, wijzigen en intrekken van internationale regelingen betreffende het beleidsterrein (drink) watervoorziening en het presenteren van Nederlandse standpunten in intergouvernementele organisaties.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Algemene handelingen Nationaal Archief.
</item>
                      <item>Product: Internationale regelingen, nota's, rapporten
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>3100, 3110</unitid>
                      <unittitle>Bijdragen aan het Comité van Voorbereiding tot Afkondiging van het Handvest van het Water in het kader van de Raad van Europa en wetenschappelijke samenwerking.</unittitle>
                      <unitdate calendar="gregorian" normal="1967/1971" era="ce">1967-1971</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905127">3100</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5336-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
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                    <c level="file">
                      <did>
                        <unitid identifier="63905128">3110</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5337-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1969/1971" era="ce">1969-1971</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905129">3111</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5338-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Waterbehoud van de Raad van Europa; ad hoc-studiegroep tot het behoud van zoetwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1967/1972" era="ce">1967-1972</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905130">2795</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5339-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Interdepartementale Coördinatiecommissie Milieuhygiëne-Coördinatiecommissie voor Internationale Milieuvraagstukken (ICMH-CIM)-Commissie Normen; studie naar de bepaling van normen op het gebied van milieuhygiëne in (inter)nationaal verband.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>75-78</unitid>
                      <unittitle>Nationaal overleg inzake een voorstel van de Commissie van de Europese Gemeenschap betreffende de normen voor drinkwater in de landen van de EEG.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905132">75</unitid>
                        <unitid audience="internal" type="obsolete">74-83/78</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-533b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905133">76</unitid>
                        <unitid audience="internal" type="obsolete">74-83/78</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-533c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905134">77</unitid>
                        <unitid audience="internal" type="obsolete">74-83/79</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-533d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905135">78</unitid>
                        <unitid audience="internal" type="obsolete">74-83/79</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-533e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Documentatie en diversen,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905136">2793</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-533f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Implementatie van de EEG-richtlijn in de Nederlandse wetgeving inzake de kwaliteit van het oppervlaktewater bestemd voor drinkwaterproductie.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1977" era="ce">1974-1977</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905137">1571</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1976-003(1202)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5340-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de waterkwaliteit in het licht van de EEG-richtlijn aan oppervlaktewater bestemd voor de bereiding van drinkwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905139">185</unitid>
                      <unitid audience="internal" type="obsolete">74-83/211</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5341-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslagen van bijeenkomsten van deskundigen inzake de tenuitvoerlegging van de EEG-richtlijn betreffende de lozing van gevaarlijke stoffen in het grondwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905140">123</unitid>
                      <unitid audience="internal" type="obsolete">74-83/106</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5342-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>De samenwerking met de Directie Internationale Technische Hulp van het Ministerie van Buitenlandse Zaken.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">52</unitid>
                    <unittitle>Het onderhouden van internationale contacten en samenwerking op het gebied van de (drink) watervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapporten,verslagen, correspondentie.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.13</unitid>
                      <unittitle>INTERNATIONALE CONTACTEN EN SAMENWERKING</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.13.01</unitid>
                        <unittitle>RAPPORTAGES OVER DIVERSE ONDERZOEKEN, MISSIES EN ADVIEZEN</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.13.01.1</unitid>
                          <unittitle>Afrika</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905151">3054</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-534d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Benin, voorbereiding van het Project Sanering van Moerassige Woonwijken van Cotonou door ir. H.F. Kaltenbrunner in opdracht van het Directoraat-Generaal voor Internationale Samenwerking van het Ministerie van Buitenlandse Zaken.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905152">3068</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-534e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bovenvolta, onderzoek inzake de begeleiding en eventuele financiering van zeven watervoorzieningsprojecten in stedelijke centra.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>772, 1325</unitid>
                            <unittitle>Egypte.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905154">1325</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1981-006(1379)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5350-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Missierapporten inzake financieringsprojecten drinkwatervoorziening en afvalwaterbehandeling,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905155">772</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/175(328)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5351-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslag van de missie van Konijnenburg en Krul van 26 januari - 1 maart 1939.</unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905156">3071</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5352-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Guinee-Bissau, rurale watervoorziening regio's Quinara-Tombali en steunverlening aan de algemene directie van het Ministere des Ressources Naturelles.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905158">3090</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5353-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Kenya, Report of the Evaluation Mission of the Water Resources Assessment Programme (WRAP-project).</unittitle>
                            <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905159">3069</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5354-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Malawi, Appraisal of the Lower Shire Valley Water Resources Investigation project.</unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905160">3072</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5355-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Mozambique, appraisal of ongoing and proposed water supply and sanitation projects in the framework of the Netherlands-Moçambican bilateral cooperation.</unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905161">2624</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(325)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5356-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Senegal, divers onderzoek in Dakar.</unittitle>
                            <unitdate calendar="gregorian" normal="1967/1973" era="ce">1967-1973</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.13.01.2</unitid>
                          <unittitle>Azië</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2743, 3079</unitid>
                            <unittitle>Bangladesh.</unittitle>
                            <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905164">2743</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5359-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Correspondentie en diverse rapporten inzake watervoorzieningsprojecten,<unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905165">3079</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-535a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Begeleiding diverse onderzoeken,<unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1391, 3084</unitid>
                            <unittitle>Birma.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905167">3084</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-535c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voortgang van twee watervoorzieningsprojecten,<unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905168">1391</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1982-001(1400)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-535d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Korte missie in september 1982 naar het Rangoon General Hospital Water Supply Project en het Village Group Piped Water Supply Project door J. Zeper,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>India.</unittitle>
                            <unitdate calendar="gregorian" normal="1963/1966" era="ce">1963-1966</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905170">1212</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/422(855)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-535f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de watervoorziening van de nieuwe Nederlandse Ambassade te New Delhi,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905171">1429</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/449(1425)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5360-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterproject Indore; verslag omtrent een bezoek van 3 weken aan de stad Indore en omgeving,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905172">2622</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(323)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5361-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Indore,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Indonesië.</unittitle>
                            <unitdate calendar="gregorian" normal="1925/1983" era="ce">1925-1983</unitdate>
                          </did>
                          <odd>
                            <p>Nederlands-Indië tot 1950</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63905176">2616</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(317)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5365-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Jogjakarta,<unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905177">385</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/52</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5366-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Aangelegenheden met betrekking tot de drinkwatervoorzieningen, met name het tekort aan hoger gekwalificeerd personeel,<unitdate calendar="gregorian" normal="1946/1950" era="ce">1946-1950</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905178">386</unitid>
                              <unitid audience="internal" type="obsolete">B1,15-72/52</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5367-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. Fikken betreffende de overheidsbemoeiing met de waterleidingbedrijven,<unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>div.nrs.</unitid>
                              <unittitle>Nieuw-Guinea.<unitdate calendar="gregorian" normal="1952/1958" era="ce">1952-1958</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905180">2617</unitid>
                                <unitid audience="internal" type="obsolete">B456/13-73(318)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5369-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1952/1955" era="ce">1952-1955</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c otherlevel="filegrp" level="otherlevel">
                              <did>
                                <unitid>1018, 1065</unitid>
                                <unittitle>Biak, marinekamp.<unitdate calendar="gregorian" normal="1956/1958" era="ce">1956-1958</unitdate>
                                </unittitle>
                              </did>
                              <c level="file">
                                <did>
                                  <unitid identifier="63905183">1018</unitid>
                                  <unitid audience="internal" type="obsolete">R09-80/284(638)</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-536b-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>De watervoorziening,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                              <c level="file">
                                <did>
                                  <unitid identifier="63905184">1065</unitid>
                                  <unitid audience="internal" type="obsolete">R09-80/284(689)</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-536c-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>Toestand van de watervoorziening,<unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905185">903</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/289(561)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-536d-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Watervoorzieningen,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905186">899</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/284(559)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-536e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Advies bij het ontwerpen van een drinkwatervoorziening,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905187">3080</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-536f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Reports of the watersupply projects in Indonesia, West-Java en Palembang by the Dutch Mission, 1974,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905188">2800</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5370-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Project Palembang Water Supply in Indonesië,<unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905189">3081</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5371-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Status and future of the bilateral Indonesian Netherlands project on rural watersupply of West-Java,<unitdate calendar="gregorian" normal="1976/1980" era="ce">1976-1980</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905190">3074</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5372-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek inzake de begeleiding van watervoorzieningsprojecten op de Ambonese eilanden Haruku en Saparua,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905191">3137</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5373-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Overzicht van de water supply projecten naar aanleiding van de identificatiemissie in april - mei 1979,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905192">3082</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5374-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Study on waterquality, sewerage &amp; urban drainage in the Botabek area (Jakarta),<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2799, 3073</unitid>
                              <unittitle>Molukken.<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905194">2799</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5376-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Projectidentificatiemissie in 1978 op het gebied van de drinkwatervoorziening,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905195">3073</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5377-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>The fact-finding mission regarding ground water potential and water supply of the south-western islands of the Province Maluku.</unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905196">3091</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5378-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Progress of watersupply and sanitation projects in the framework of the Netherlands-Indonesian bilateral cooperation,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1066, 2493-2494</unitid>
                            <unittitle>Irak.</unittitle>
                            <unitdate calendar="gregorian" normal="1956/1958" era="ce">1956-1958</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905198">2494</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(223)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-537a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gebruik van de Wadi Tharthar-laagte als hoogwaterafvoer van de Tigris, hydrologisch onderzoek,<unitdate calendar="gregorian" normal="1956/1957" era="ce">1956-1957</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905199">2493</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(122)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-537b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Doorlatendheidsproeven voor het Razzaza-dijkproject,<unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905200">1066</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1958-013(690)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-537c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Geo-elektrisch onderzoek in de noodlijdende streek van Wadi-Tharthar in Iraq,<unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905201">2623</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(324)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-537d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Iran : watervoorziening te Abadan.</unittitle>
                            <unitdate calendar="gregorian" normal="1935/1961" era="ce">1935-1961</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Israël.</unittitle>
                            <unitdate calendar="gregorian" normal="1938/1975" era="ce">1938-1975</unitdate>
                          </did>
                          <odd>
                            <p>Voorheen Palestina</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63905205">739</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/162(303)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5381-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport inzake de drinkwatervoorziening in de Haifa Bay Dune Area van het Rijksbureau voor Drinkwatervoorziening,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905206">740</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/151(303)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5382-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport inzake grondwatervraagstukken aangaande het concessiegebied van Palestine Potash Limited aan de Noord- en Zuideinden van de Dode Zee,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905207">2794</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5383-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Advies aan Israël over de watervoorziening in het algemeen en geohydrologische vraagstukken in het bijzonder,<unitdate calendar="gregorian" normal="1949/1958" era="ce">1949-1958</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905209">1156</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1961-017(790)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5384-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de doordringbaarheid van grondwater in het zuidelijk gebied van de Dode Zee door het Rijksinsituut voor Drinkwatervoorziening,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905210">1157</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/390(791)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5385-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Uittreksel van het onderzoeksrapport naar de doordringbaarheid van grondwater in het zuidelijk gebied van de Dode Zee en de constructie van een dijk voor een zoutpan door Dead Sea Works Limited in Israël,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905211">1679</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1975-1(14)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5386-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Brackish groundwater bodies as a result of geological history and hydrological conditions gepresenteerd op symposium in Israel door C.R. Meinardi,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905212">3092</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5387-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Jemen : Rural watersupply project in the montane plains Yemen Arabic Republic (YAR).</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905213">901</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/285(560)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5388-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Libanon : onderzoek naar het geschil tussen Libanon, de gemeenteraad en het waterleidingsbedrijf van Beiroet door W.F.J.M. Krul en G.J. Wiarda.</unittitle>
                            <unitdate calendar="gregorian" normal="1953/1954" era="ce">1953-1954</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905214">2625</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(326)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5389-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Syrië : Watervoorziening El Ghab.</unittitle>
                            <unitdate calendar="gregorian" normal="1952/1953" era="ce">1952-1953</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905215">3132</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-538a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Pakistan : Engineering studies on water supply and sewerage for the Karachi Metropolitan Area.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905216">3133</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-538b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Sri Lanka : Mannar water supply scheme evaluation report 1983.</unittitle>
                            <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.13.01.3</unitid>
                          <unittitle>Europa</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905218">2844</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-538d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Samenwerking tussen West-Europese landen op het gebied van watervoorziening en afvalwater(Groupe de Contact pour l'Etude des Eaux).</unittitle>
                            <unitdate calendar="gregorian" normal="1954/1956" era="ce">1954-1956</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>België.</unittitle>
                            <unitdate calendar="gregorian" normal="1961/1982" era="ce">1961-1982</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905220">2490</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(219)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-538f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Bronbemalingen voor de bouw van kaaimuren voor het Sifferdok en Sidemar aan het Kanaal van Gent naar Terneuzen,<unitdate calendar="gregorian" normal="1961/1963" era="ce">1961-1963</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905221">1281</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(940)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5390-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Beschikbaarheid van Maaswater benedenstrooms van Lith bij toenemend waterverbruik in België,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905222">2739</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5391-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nederlands-Belgisch overleg over de Maas,<unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905223">31</unitid>
                              <unitid audience="internal" type="obsolete">74-83/46</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5392-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Detachering en werkzaamheden van H. Vrijthof van de Chemisch-Biologische Hoofdafdeling van het RID bij het Directoraat-Generaal voor de Milieuzorg van de EEG te Brussel,<unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905224">1161</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1961-012(793)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5393-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Denemarken: Verslag over grondwaterbeheer; studiereis van 28 april t/m 8 mei 1961 ondernomen door F.A. Liefrinck, B.A. van Nes en J.J. van Soest.</unittitle>
                            <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Duitsland.</unittitle>
                            <unitdate calendar="gregorian" normal="1934/1983" era="ce">1934-1983</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905226">630</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/159(218)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5395-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport inzake een reis naar Duitsland ter bespreking van het belang van het voorkomen van verontreiniging van de Rijn en het daartoe organiseren van een geregeld onderzoek door internationale samenwerking, uitgebracht aan de Commissie Smaak en Reuk Rivierwater door de leden R.P. van Royen en W.F.J.M. Krul,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905227">1017</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1952-015(518)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5396-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslag van een reis naar Duitsland ten behoeve van het geo-elektrisch onderzoek van de Dienst der Zuiderzeewerken,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905228">1160</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/391(792)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5397-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslag van het 5e Internationale Waterleidingcongres gehouden te Berlijn-West van 29 mei - 3 juni 1961,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905229">1181</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/408(828)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5398-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Beheer van oppervlakte- en grondwater in Duitsland een verslag van een studiereis ondernomen door F.A. Liefrinck, B.A. van Nes en J.J. van Soest van 25 april - 4 mei 1962,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905230">1498</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1968-001(988)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5399-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslag van een studiereis naar Duitsland van 7 - 12 juli 1968,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905232">2948</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-539a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Samenwerking tussen de Nederlandse Commissie voor de Bescherming van Waterwingebieden en de Deutscher Verein des Gas- und Wasserfaches betreffende een algemene rechtsgrond voor de bescherming van het grondwater tegen verontreiniging,<unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905233">2773</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-539b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Symposium te Frankfurt in 1977 over kunstmatige infiltratie in het Rijndal bij Frankfurt,<unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905234">2701</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-539c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Duits-Nederlands overleg met betrekking tot grondwater in grensgebieden,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Engeland.</unittitle>
                            <unitdate calendar="gregorian" normal="1934/1979" era="ce">1934-1979</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905236">626</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/156(217)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-539e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslag van een studiereis naar Engeland ter bezichtiging van enige onthardingsinstallaties in verband met het eventuele plan voor een grondwatervoorziening in de gemeente Dordrecht,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905237">749</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/238(391)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-539f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Dienstreis naar Engeland van 11 t/m 20 september 1945 door<lb></lb>W.F.J.M. Krul.,<unitdate calendar="gregorian" normal="1945" era="ce">1945</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905238">806</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/212(410)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Samenwerking tussen medici en technici op het gebied van de hygiëne in Engeland door W.F.J.M. Krul en J.P. Bijl,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905239">260</unitid>
                              <unitid audience="internal" type="obsolete">74-83/269</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoeksproject Bevolkingsexpositie aan zware metalen afkomstig van leidingmaterialen voor drinkwaterdistributie in Nederland en Engeland,<unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Frankrijk.</unittitle>
                            <unitdate calendar="gregorian" normal="1933/1966" era="ce">1933-1966</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905242">719</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/159(203)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslag van een reis naar Frankrijk ter nadere bestudering van de verontreiniging van de Rijn door de kalimijnen in de Elzas,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905243">682</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/193(256)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voordracht van W.F.J.M. Krul over de Nationale Politiek voor Water voor het Internationaal Congres voor Waterhygiëne,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905244">808</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1946-001(411)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Aantekeningen van een studiereis door Frankrijk,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>div.nrs.</unitid>
                              <unittitle>Pont de Neuilly; aanleg metro.<unitdate calendar="gregorian" normal="1961/1962" era="ce">1961-1962</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905246">1150</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/387(787)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a7-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Onderzoek naar de mogelijkheid tot het droogleggen van bouwputten door middel van filtrerende putten gedurende de constructie van de doorgang onder de Seine voor de metro Rond-Point de la Défense,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905247">1152</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/387(788)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a8-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Onderzoek naar de mogelijkheid tot het droogleggen van de bouwput voor een doorgang onder de Seine en het bouwen van toegangstunnels over een lengte van 300 meter door middel van filtrerende putten,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905248">1148</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/387(786)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53a9-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Ontwerpen van bouwputten voor een toegang onder de Seine en toegangstunnels over een lengte van 300 meter,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905249">1154</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/387(789)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53aa-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Vervolg-rapport van 24 maart 1961 betreffende het Project Rabattement,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid>1179</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/387(827)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ab-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Onderzoek naar de mogelijkheid voor een ontwerp van een vlakte voor de constructie,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905252">2491</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(220)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ac-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Toulon, bronbemaling ten behoeve van een droogdok,<unitdate calendar="gregorian" normal="1961/1962" era="ce">1961-1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905253">1257</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/438(914)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ad-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Austerlitz, drooglegging van de bouwput voor het ondergrondse station,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905254">2790</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ae-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Parijs, bemaling van een bouwput ten behoeve van een stationsgebouw voor de Franse Spoorwegen,<unitdate calendar="gregorian" normal="1965/1966" era="ce">1965-1966</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905255">1274</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/447(932)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53af-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Regionale verbinding oost - west, traject Nanterre - La Défense, doorgang van de bouwput Lot F1,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Griekenland.</unittitle>
                            <unitdate calendar="gregorian" normal="1957/1966" era="ce">1957-1966</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905257">1057</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/348(669)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport Scaramanga Shipyard, beschrijvingen van de grondlagen door J.G. Bokelman,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905258">2492</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(221)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Proefbemaling ten behoeve van de haven te Scaramanga,<unitdate calendar="gregorian" normal="1957/1966" era="ce">1957-1966</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905259">1184</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/444(829)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Hydrogeologisch onderzoek in het kader van de ontwatering van een holte voor de constructie van een haven in Scaramanga,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905260">1258</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/444(915)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Ontwatering van de haven van Scaramanga, experimenten en resultaten,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905261">892</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/258(460)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nederland : Inleidend rapport voor de watervoorziening van de militaire begraafplaats in Margraten in Nederland.</unittitle>
                            <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905263">702</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/130(276)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Polen : studiereis over de drinkwatervoorziening in Polen uitgebracht aan de minister van Economische Zaken door W.F.J.M. Krul.</unittitle>
                            <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905264">1565</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1975-007(1197)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Spanje : Barcelona, verslag over grondwatersituatie in Llobregat delta samengesteld door W. Cramer.</unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905265">1275</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/462(934)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zweden : Rapport over de toekomstige vraag naar leidingwater bevindingen opgemaakt door Pieter G.M. Mellema van het RID.</unittitle>
                            <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905266">1256</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/437(913)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53b9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zwitserland : Verslag van een studiereis naar enige zwembaden.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.13.01.4</unitid>
                          <unittitle>Amerika</unittitle>
                        </did>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.13.01.4.2</unitid>
                            <unittitle>Midden en Zuid-Amerika</unittitle>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>div.nrs.</unitid>
                              <unittitle>Suriname en de Nederlandse Antillen.</unittitle>
                              <unitdate calendar="gregorian" normal="1929/1982" era="ce">1929-1982</unitdate>
                            </did>
                            <c otherlevel="filegrp" level="otherlevel">
                              <did>
                                <unitid>div.nrs.</unitid>
                                <unittitle>Suriname.<unitdate calendar="gregorian" normal="1929/1982" era="ce">1929-1982</unitdate>
                                </unittitle>
                              </did>
                              <odd>
                                <p>Niet nader onder te verdelen</p>
                              </odd>
                              <c level="file">
                                <did>
                                  <unitid identifier="63905274">3067</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c0-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>Missierapporten inzake de advisering en begeleiding van watervoorzieningsprojecten in Suriname,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                              <c otherlevel="filegrp" level="otherlevel">
                                <did>
                                  <unitid>2620, 2988-2989</unitid>
                                  <unittitle>Algemeen.<unitdate calendar="gregorian" normal="1929/1962" era="ce">1929-1962</unitdate>
                                  </unittitle>
                                  <physdesc>
                                    <extent>3 pakken</extent>
                                  </physdesc>
                                </did>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905276">2620</unitid>
                                    <unitid audience="internal" type="obsolete">B456/13-73(321)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c2-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>
                                      <unitdate calendar="gregorian" normal="1929/1957" era="ce">1929-1957</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905277">2988</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c3-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>
                                      <unitdate calendar="gregorian" normal="1931/1962" era="ce">1931-1962</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905278">2989</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c4-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Bijlagen bij inventarisnummer 3901.</unittitle>
                                  </did>
                                </c>
                              </c>
                              <c otherlevel="filegrp" level="otherlevel">
                                <did>
                                  <unitid>603, 897</unitid>
                                  <unittitle>Paramaribo.<unitdate calendar="gregorian" normal="1929/1953" era="ce">1929-1953</unitdate>
                                  </unittitle>
                                </did>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905280">603</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/176(155)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c6-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Aanleg van een waterleiding; twee rapporten, uitgebracht aan de Gouverneur van Suriname door J.W. Jenny Weijerman,<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905281">897</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/176(558)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c7-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Nota inzake onderzoek naar de 2e waterwinplaats,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                              </c>
                              <c otherlevel="filegrp" level="otherlevel">
                                <did>
                                  <unitid>773, 2797</unitid>
                                  <unittitle>Surinaamsche Waterleiding Maatschappij (SWM).<unitdate calendar="gregorian" normal="1939/1948" era="ce">1939-1948</unitdate>
                                  </unittitle>
                                </did>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905283">773</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/176(329)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53c9-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Nota van toelichting betreffende uitbreiding van het pompstation en de prise d'eau,<unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905284">2797</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ca-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Voorlopig rapport inzake de huidige toestand en de nodige uitbreidingen van de werken,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                              </c>
                              <c level="file">
                                <did>
                                  <unitid identifier="63905285">2621</unitid>
                                  <unitid audience="internal" type="obsolete">B456/13-73(322)</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53cb-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>Wateronderzoek ten behoeve van de Stichting Machinale Landbouw Suriname,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                            </c>
                            <c otherlevel="filegrp" level="otherlevel">
                              <did>
                                <unitid>div.nrs.</unitid>
                                <unittitle>Nederlandse Antillen.<unitdate calendar="gregorian" normal="1932/1972" era="ce">1932-1972</unitdate>
                                </unittitle>
                              </did>
                              <c otherlevel="filegrp" level="otherlevel">
                                <did>
                                  <unitid>div.nrs.</unitid>
                                  <unittitle>Beneden eilanden.<unitdate calendar="gregorian" normal="1932/1972" era="ce">1932-1972</unitdate>
                                  </unittitle>
                                </did>
                                <c otherlevel="filegrp" level="otherlevel">
                                  <did>
                                    <unitid>2619, 2990-2992</unitid>
                                    <unittitle>Curaçao.<unitdate calendar="gregorian" normal="1932/1972" era="ce">1932-1972</unitdate>
                                    </unittitle>
                                  </did>
                                  <c otherlevel="filegrp" level="otherlevel">
                                    <did>
                                      <unitid>2619, 2990-2992</unitid>
                                      <unittitle>Algemeen.<unitdate calendar="gregorian" normal="1932/1972" era="ce">1932-1972</unitdate>
                                      </unittitle>
                                      <physdesc>
                                        <extent>3 pakken en 1 omslag</extent>
                                      </physdesc>
                                    </did>
                                    <odd>
                                      <p>Niet nader onder te verdelen</p>
                                    </odd>
                                    <c level="file">
                                      <did>
                                        <unitid identifier="63905292">2990</unitid>
                                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d2-79fa-e053-09f0900a5ea8</unitid>
                                        <unittitle>
                                          <unitdate calendar="gregorian" normal="1932/1948" era="ce">1932-1948</unitdate>
                                        </unittitle>
                                      </did>
                                    </c>
                                    <c level="file">
                                      <did>
                                        <unitid identifier="63905293">2619</unitid>
                                        <unitid audience="internal" type="obsolete">B456/13-73(320)</unitid>
                                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d3-79fa-e053-09f0900a5ea8</unitid>
                                        <unittitle>
                                          <unitdate calendar="gregorian" normal="1932/1969" era="ce">1932-1969</unitdate>
                                        </unittitle>
                                        <physdesc>
                                          <extent>omslag</extent>
                                        </physdesc>
                                      </did>
                                    </c>
                                    <c level="file">
                                      <did>
                                        <unitid identifier="63905294">2991</unitid>
                                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d4-79fa-e053-09f0900a5ea8</unitid>
                                        <unittitle>
                                          <unitdate calendar="gregorian" normal="1949/1962" era="ce">1949-1962</unitdate>
                                        </unittitle>
                                      </did>
                                    </c>
                                    <c level="file">
                                      <did>
                                        <unitid identifier="63905295">2992</unitid>
                                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d5-79fa-e053-09f0900a5ea8</unitid>
                                        <unittitle>
                                          <unitdate calendar="gregorian" normal="1959/1972" era="ce">1959-1972</unitdate>
                                        </unittitle>
                                      </did>
                                    </c>
                                  </c>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905296">703</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/131(277)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d6-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Gouvernements-Waterleidingen op Curaçao en Aruba uitgebracht door het Rijksbureau voor Drinkwatervoorziening,<unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905297">893</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/131(461)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d7-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>De waterhuishouding van Curaçao, Aruba en Bonaire,<unitdate calendar="gregorian" normal="1947/1949" era="ce">1947-1949</unitdate>
                                    </unittitle>
                                    <physdesc>
                                      <extent>pak</extent>
                                    </physdesc>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905298">2618</unitid>
                                    <unitid audience="internal" type="obsolete">B456/13-73(319)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d8-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Aruba,<unitdate calendar="gregorian" normal="1960/1970" era="ce">1960-1970</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905299">1365</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/131(1056)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53d9-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Beknopt verslag van een dienstreis in verband met uitbreiding van de waterproduktie van het water- en energiebedrijf van Curaçao,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                              </c>
                              <c otherlevel="filegrp" level="otherlevel">
                                <did>
                                  <unitid>1303, 1496</unitid>
                                  <unittitle>Boven eilanden.<unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                                  </unittitle>
                                </did>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905302">1303</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/434(912)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53db-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Grondwater op Sint Maarten,<unitdate calendar="gregorian" normal="1965/1966" era="ce">1965-1966</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                                <c level="file">
                                  <did>
                                    <unitid identifier="63905303">1496</unitid>
                                    <unitid audience="internal" type="obsolete">R09-80/464(987)</unitid>
                                    <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53dc-79fa-e053-09f0900a5ea8</unitid>
                                    <unittitle>Verbetering van de drinkwatervoorziening op de eilanden Saba en Sint Eustatius,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                                    </unittitle>
                                  </did>
                                </c>
                              </c>
                              <c level="file">
                                <did>
                                  <unitid identifier="63905304">1273</unitid>
                                  <unitid audience="internal" type="obsolete">R09-80/131(931)</unitid>
                                  <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53dd-79fa-e053-09f0900a5ea8</unitid>
                                  <unittitle>Oriënterend bezoek aan de Nederlandse Antillen van 13 - 26 oktober 1965,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                                  </unittitle>
                                </did>
                              </c>
                            </c>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>1389, 3070</unitid>
                              <unittitle>Jamaica, the Lower Rio Cobre Artificial Recharge Project.</unittitle>
                              <unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905306">3070</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53df-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Mission reports on the use of a mathematical model,<unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905307">1389</unitid>
                                <unitid audience="internal" type="obsolete">R16-83/1982-018(1399)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e0-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Het gebruik van een rekenkundig model door J.L.M. Rolf,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.13.01.4.1</unitid>
                            <unittitle>Noord-Amerika</unittitle>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>div.nrs.</unitid>
                              <unittitle>Verenigde Staten.</unittitle>
                              <unitdate calendar="gregorian" normal="1947/1981" era="ce">1947-1981</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905310">833</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/214(425)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e3-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Rapporten naar aanleiding van een reis naar de Verenigde Staten door W.F.J.M. Krul; opleiding van sanitary engineers,<unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905311">834</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/272(426)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e4-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Reis naar de Verenigde Staten in september 1946,<unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905312">1364</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/131(1055)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e5-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Indrukken van de reis naar de Verenigde Staten door C. van Rooyen,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905313">3063</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e6-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Verslag van een studiereis van ir. A. Leijnse en ir. K. Kovar naar de Verenigde Staten in 1981 met als thema de overname van bestaande grondwaterkwaliteitsmodellen in het kader van het Onderzoekproject Grondwaterverontreiniging,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>1019, 1142</unitid>
                              <unittitle>Verenigde Staten en Canada.</unittitle>
                              <unitdate calendar="gregorian" normal="1952/1960" era="ce">1952-1960</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905315">1019</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/281(519)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e8-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Rapport inzake de studiereis naar de Verenigde Staten en Canada betreffende toevoeging van fluor aan drinkwater,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905316">1142</unitid>
                                <unitid audience="internal" type="obsolete">R16-83/1960-001(763)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53e9-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Aantekeningen inzake technische bezoeken gebracht tijdens een vakantiereis door het oostelijk deel van Canada en de Verenigde Staten in juni 1960,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.13.02</unitid>
                        <unittitle>PARTICIPATIE IN INTERNATIONALE ORGANISATIES</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Verenigde Naties.</unittitle>
                          <unitdate calendar="gregorian" normal="1951/1982" era="ce">1951-1982</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905319">3101</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ec-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verslagen van deelname aan conferenties van de Economic Commission for Europe (United Nations) met als thema's het gebruik van waterbronnen en de bestrijding van verontreiniging van de Rijn,<unitdate calendar="gregorian" normal="1963/1967" era="ce">1963-1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905320">2951</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ed-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>UNESCO/WHO-bijeenkomst inzake hydrologische problemen in Europa in september 1977 te Brussel,<unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905321">2798</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ee-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nederlandse hulpverlening aan watervoorzieningsprojecten in ontwikkelingslanden in het kader van de International Water Supply and Sanitation Decade (Verenigde Naties),<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2728, 3102</unitid>
                            <unittitle>World Health Organization.<unitdate calendar="gregorian" normal="1951/1978" era="ce">1951-1978</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905323">3102</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verslagen van de Seminars for European Sanitary Engineers,<unitdate calendar="gregorian" normal="1951/1959" era="ce">1951-1959</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905324">2728</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Workshop over sodium,<unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2785-2786</unitid>
                            <unittitle>Deelname aan UNESCO-bijeenkomsten betreffende internationale samenwerking op hydrologisch gebied.<unitdate calendar="gregorian" normal="1962/1968" era="ce">1962-1968</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905327">2785</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1962/1964" era="ce">1962-1964</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905328">2786</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905329">267</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/1</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het uitbrengen van advies inzake de mogelijkheid de Nederlandse bijdrage bij de bouw van openbare nutsvoorzieningen in het buitenland te bevorderen.</unittitle>
                          <unitdate calendar="gregorian" normal="1936/1940" era="ce">1936-1940</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905330">2746</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Correspondentie en verslagen van de Organisation for Economic Cooperation and Development; Water Management Research Group.</unittitle>
                          <unitdate calendar="gregorian" normal="1971/1974" era="ce">1971-1974</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905331">2791</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Organisatie van de RID-EAWAG Conference Contamination of Groundwater by Organic Micropollutants van 25 - 29 april 1983 te Wolfheze.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2973-2974</unitid>
                          <unittitle>Volkenbond.</unittitle>
                          <unitdate calendar="gregorian" normal="1927/1939" era="ce">1927-1939</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905333">2973</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53f9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1927/1931" era="ce">1927-1931</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905334">2974</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53fa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1933/1939" era="ce">1933-1939</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>International Water Supply Association (IWA).</unittitle>
                          <unitdate calendar="gregorian" normal="1946/1979" era="ce">1946-1979</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Correspondentie.<unitdate calendar="gregorian" normal="1946/1970" era="ce">1946-1970</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905337">2848</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53fd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1946/1947" era="ce">1946-1947</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905338">2849</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53fe-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905339">2986</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-53ff-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905340">2987</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5400-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1950/1951" era="ce">1950-1951</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905341">2902</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5401-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1954/1955" era="ce">1954-1955</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905342">2901</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5402-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1956/1958" era="ce">1956-1958</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905343">2894</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5403-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1959/1970" era="ce">1959-1970</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Nederlands Comité.<unitdate calendar="gregorian" normal="1949/1979" era="ce">1949-1979</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905345">2775</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5405-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905346">2717</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5406-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905347">2719</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5407-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>1952 - 1953<unitdate calendar="gregorian" normal="1952/1953" era="ce">1952-1953</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905348">2718</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5408-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>1954 jan.- juni<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905349">2720</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5409-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>1954 juli - dec..</unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905350">2778</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-540a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905352">2777</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-540b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1966/1973" era="ce">1966-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905353">3109</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-540c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1975/1979" era="ce">1975-1979</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Congressen.<unitdate calendar="gregorian" normal="1953/1978" era="ce">1953-1978</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905356">2889</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-540e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Londen in 1955 (3e),<unitdate calendar="gregorian" normal="1953/1956" era="ce">1953-1956</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905358">2888</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-540f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Berlijn in 1961 (5e),<unitdate calendar="gregorian" normal="1959/1961" era="ce">1959-1961</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>1231, 2887</unitid>
                              <unittitle>Stockholm in 1964 (6e).<unitdate calendar="gregorian" normal="1961/1964" era="ce">1961-1964</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63905361">2887</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5411-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1961/1964" era="ce">1961-1964</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63905362">1231</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/423(877)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5412-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Rapport ten behoeve van het congres met als thema Pollution of water and soil by miscellaneous petroleum products,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905363">2895</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5413-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Barcelona in 1966,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905364">3006</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5414-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Brighton in 1974 (10e),<unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905365">2943</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5415-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Kyoto (Japan) in 1978 (12e),<unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2769, 3075</unitid>
                          <unittitle>Internationale Rijncommissie; Werkgroep B.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1981" era="ce">1974-1981</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905367">2769</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5417-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1974/1978" era="ce">1974-1978</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905368">3075</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5418-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2706, 2832</unitid>
                          <unittitle>International Institute for Applied Systems Analysis (IIASA).</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1982" era="ce">1974-1982</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905371">2706</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-541a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1974/1981" era="ce">1974-1981</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905372">2832</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-541b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Themagroep Resources and Environment groep (REN),<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">54</unitid>
                    <unittitle>Het adviseren inzake de totstandkoming van her- en ruilverkavelingsplannen, streekplannen, nota's ruimtelijke ordening en bestemmingsplannen, en het meewerken aan de totstandkoming ervan.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapporten.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905693">2630</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72(20)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-554f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met de Cultuurtechnische Dienst op het gebied van de drinkwatervoorziening in ruil- en herverkavelingsgebieden.</unittitle>
                      <unitdate calendar="gregorian" normal="1957/1958" era="ce">1957-1958</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905694">3271</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5550-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Advies inzake de toepassing van het Streekplan inzake de bescherming van waterwinplaatsen in de Oude Mijnstreek.</unittitle>
                      <unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905695">3269</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5551-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Toetsing van het waterwinbelang gemeente Amby, bestemmingsplan Achter de Hoven.</unittitle>
                      <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905696">3270</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5552-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Advies inzake het Streekplan Stadsgewest Sittard-Geleen.</unittitle>
                      <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905697">2814</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5553-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Advies ten behoeve van het Streekplan Utrechtse Vallei en Eemland.</unittitle>
                      <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905698">3272</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5554-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Advies inzake de aanleg van de rijksweg A2/E9 bij Maastricht.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905699">3065</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5555-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar mogelijke taken van het RID in het kader van de herinrichting Oost-Groningen en de Gronings-Drentse veenkoloniën.</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">55</unitid>
                    <unittitle>Het adviseren inzake de totstandkoming van structuurplannen op het gebied van drink- en industriewatervoorziening, en het meewerken aan de totstandkoming ervan.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Ontwerpstructuurschema Drinken industriewatervoorziening 1972, kamerstukken Tweede Kamer, 1974-1975, 13 337, nrs. 4-5.
</item>
                      <item>Product: Ontwerpstructuurschema Drink- en industriewatervoorziening 1972.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905707">2210</unitid>
                      <unitid audience="internal" type="obsolete">C63-73(19-21)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-555d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>De behandeling van het (ontwerp-) Structuurschema Drink- en Industriewatervoorziening 1972.</unittitle>
                      <unitdate calendar="gregorian" normal="1969/1973" era="ce">1969-1973</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905708">171</unitid>
                      <unitid audience="internal" type="obsolete">74-83/197</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-555e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het infiltratieproject Veluwe opgenomen in het ontwerp-Structuurschema Drink- en Industriewatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1978" era="ce">1974-1978</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Het verlenen van medewerking aan de totstandkoming van de Beleidsnota en het Tweede Structuurschema Drink- en Industriewatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905710">105</unitid>
                        <unitid audience="internal" type="obsolete">74-83/90</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5560-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905711">115</unitid>
                        <unitid audience="internal" type="obsolete">74-83/92</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5561-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het overleg met de Rijkswaterstaat, de Rijksplanologische Dienst, en de Vereniging van Exploitanten van Waterleidingbedrijven in Nederland,<unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905712">106</unitid>
                        <unitid audience="internal" type="obsolete">74-83/90</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5562-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Beleidsnota en Structuurschema Drink- en Industriewatervoorziening,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Vergaderstukken van het plenair RID-structuurschema overleg.<unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63905714">108</unitid>
                          <unitid audience="internal" type="obsolete">74-83/91</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5564-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905715">110</unitid>
                          <unitid audience="internal" type="obsolete">74-83/91</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5565-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1978 jan. - mrt.<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905716">112</unitid>
                          <unitid audience="internal" type="obsolete">74-83/91</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5566-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1978 apr. - nov.<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905717">117</unitid>
                        <unitid audience="internal" type="obsolete">74-83/93</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5567-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van het intern overleg van het Ministerie van<lb></lb>Volksgezondheid en Milieuhygiëne,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>265-266</unitid>
                      <unittitle>Reacties op de ontwerp-Vaartuigennota en het ontwerp-Structuurschema Vaarwegen, in het bijzonder van het Caberg-kanaal.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63905719">265</unitid>
                        <unitid audience="internal" type="obsolete">74-83/275</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5569-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905720">266</unitid>
                        <unitid audience="internal" type="obsolete">74-83/275</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-556a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Bijlagen,<unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905721">1307</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1981-002(1361)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-556b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Beschrijving van de milieu-effecten van duininfiltratie in Zuid-Kennemerland ten dienste van het Tweede Structuurschema Drink- en Industriewatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">59</unitid>
                    <unittitle>Het adviseren van de minister inzake het opleggen van gedoogplichten voor de aanleg en het onderhoud van (drink)watervoorzieningen en het adviseren inzake schadeafwikkeling door toedoen van grondwateronttrekking.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie Grondwaterwet Waterleidingbedrijven (COGROWA)</corpname>
                      </item>
                      <item>Grondslag: Grondwaterwet waterleidingbedrijven (houdende regelen inzake het onttrekken van water aan de bodem door waterleidingbedrijven) (Stb. 1954, 383), art. 5, lid 1.<lb></lb>Opheffingsbesluit Opheffing Commissie Grondwaterwet Waterleidingbedrijven (CoGroWa) (Stcrt.1996, 209).
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905729">2859</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5573-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Werkgroep Geohydrologische Aspecten van Grondwaterwinning.</unittitle>
                      <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">62</unitid>
                    <unittitle>Het adviseren van de minister inzake het goedkeuren van statuten, instructies voor het personeel, verordeningen op het beheer en leveringsvoorwaarden van waterleidingbedrijven.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unittitle>HET ADVISEREN INZAKE WATERLEIDINGBEDRIJVEN</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63905741">599</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/021(107)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-557d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport met een plan inzake het exploiteren van een veenkoloniale waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63905743">381</unitid>
                          <unitid audience="internal" type="obsolete">B1,15-72/14</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-557e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De voorwaardelijke overdracht aan de directeur van het RID door de minister van Sociale Zaken van het recht tot het goedkeuren van plannen en overeenkomsten van door het rijk gesteunde waterleidingbedrijven.</unittitle>
                          <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unittitle>PROVINCIES</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unittitle>Groningen</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905746">1189</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/274(831)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5581-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Winschoten, gemeentewaterleiding; taxatierapport inzake de waarde der activa.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Drenthe</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905748">788</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/078(348)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5583-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>NV Waterleidingmaatschappij Drenthe; onderzoek naar de meest gewenste grondslag voor de tarieven.</unittitle>
                            <unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Overijssel</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905750">709</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/093(283)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5585-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>NV Waterleidingmaatschappij Overijssel; rapport aan de minister van Sociale Zaken betreffende de gang van zaken met betrekking tot de verplichte aansluiting en de drinkwatervoorziening van het vee.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905751">822</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/205(374)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5586-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Almelo, gemeente; toetreding tot de NV Waterleidingmaatschappij Overijssel.</unittitle>
                            <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905752">752</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/205(394)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5587-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Almelo, nota inzake de overnemingswaarde van het waterleidingbedrijf.</unittitle>
                            <unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905753">1072</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/100(697)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5588-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oldebroek, nota inzake bepaling van de overnemingswaarde van het in Wezep gelegen distributienet van het gemeentelijk waterleidingbedrijf van Kampen.</unittitle>
                            <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Gelderland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905755">1107</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/139(738)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-558a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de mogelijke samenwerking van de waterleidingbedrijven in de provincie en het kwantitatieve beheer van het grondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905756">710</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/028(284)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-558b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Arnhem, overneming waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1114, 1133</unitid>
                            <unittitle>Borculo, gemeentelijk waterleidingbedrijf; nota's inzake de bepaling van de overnemingswaarde van de eigendommen.</unittitle>
                            <unitdate calendar="gregorian" normal="1960/1961" era="ce">1960-1961</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905759">1114</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/057(735)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-558d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905761">1133</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/057(766)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-558e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905762">1288</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/458(947)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-558f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Culemborg, waterleidingmaatschappij; nota inzake de bepaling van de overnemingswaarde van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905763">946</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/213(589)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5590-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Doesburg, gemeentelijk waterleidingbedrijf; bepaling van de overnemingswaarde van de eigendommen.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905764">973</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/091(504)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5591-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Geldermalsen, gemeentelijk waterleidingbedrijf; bruikbaarheidsduur van de eigendommen.</unittitle>
                            <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905765">846</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/300(531)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5592-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hattem, gemeentelijk waterleidingbedrijf; bepaling van de overnemingswaarde van de eigendommen.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905766">1134</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/006(767)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5593-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nijkerk, gemeentelijk waterleidingbedrijf; nota inzake de bepaling van de overnemingswaarde.</unittitle>
                            <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905767">1286</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/031(945)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5594-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Wageningen en Renkum, gemeenten; mogelijkheid en de technische consequenties van een verlenging van de duur der waterleveringsovereenkomst tot ultimo 1986.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905768">839</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/086(528)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5595-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zaltbommel, gemeentelijk waterleidingbedrijf; nota inzake de bruikbaarheidsduur van de eigendommen.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1183, 1243</unitid>
                            <unittitle>Zevenaar, gemeentelijk waterleidingsbedrijf; nota's inzake de bepaling van de overnemingswaarde.</unittitle>
                            <unitdate calendar="gregorian" normal="1962/1964" era="ce">1962-1964</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905771">1183</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/399(817)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5597-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905772">1243</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/399(893)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5598-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Utrecht</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905774">1297</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/459(955)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-559a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Woerden, rapport inzake samenwerking van de gemeentelijke waterleidingbedrijven van Bodegraven en Woerden met de Stichting Drinkwaterleiding De Elf Gemeenten.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Noord-Holland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905776">1041</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/375(675)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-559c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Noord-Holland, Provinciaal Waterleidingbedrijf; overneming van het waterleidingbedrijf van Egmond aan Zee.</unittitle>
                            <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Zuid-Holland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905779">1247</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/022(897)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-559e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hendrik-Ido-Ambacht, gemeentelijke waterleiding; nota inzake een verbeterde tariefstructuur.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905780">1574</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/478(1012)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-559f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hoeksche Waard-West, waterleidingbedrijf van de drinkwatervoorziening; nota inzake de bepaling van de overnemingswaarde.</unittitle>
                            <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905781">1043</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/134(654)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Leidsche Duinwater Maatschappij NV, nota inzake de mogelijkheid van waterinkoop en gros.</unittitle>
                            <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1264, 1294</unitid>
                            <unittitle>Reeuwijk, waterleidingsbedrijf van de gemeente; nota's inzake de bepaling van de overnemingswaarde en de toekomstige exploitatiemogelijkheden.</unittitle>
                            <unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905783">1264</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/126(922)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905784">1294</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/126(952)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Zeeland</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>691, 729</unitid>
                            <unittitle>Borssele, drinkwaterleiding van de gemeente; rapporten betreffende de overneming.</unittitle>
                            <unitdate calendar="gregorian" normal="1937/1938" era="ce">1937-1938</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905788">691</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/128(267)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905789">729</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/128(293,294)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905790">731</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/128(295)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Midden-Zeeland, NV Waterleidingmaatschappij; nota inzake de rentabiliteit van het bedrijf bij aansluiting van de gemeenten Arnemuiden, Veere met Gapinge en Zoutelande.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905791">1130</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/128(749)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55a9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Midden-Zeeland, NV Waterleidingmaatschappij en het gemeentelijk waterleidingbedrijf van Middelburg; nota inzake de samenwerking ten behoeve van de drinkwatervoorziening Walcheren, Noord-Beveland en en Zuid-Beveland.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905792">1103</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/039(680)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55aa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Schouwen-Duiveland, NV Waterleidingmaatschappij; nota inzake de te treffen technische en financiële maatregelen.</unittitle>
                            <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905793">933</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/128(580)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55ab-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Souburg en Vlissingen, onderzoek naar de tarieven en voorwaarden voor waterlevering door de NV Waterleidingmaatschapij Midden-Zeeland.</unittitle>
                            <unitdate calendar="gregorian" normal="1954/1955" era="ce">1954-1955</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905794">660</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/168(?)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55ac-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vlissingen, voorlopig rapport inzake eventuele waterlevering door de NV Waterleidingmaatschappij Zuid-Beveland.</unittitle>
                            <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905796">770</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/128(325)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55ad-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vrouwenpolder, gemeente; nota inzake de rentabiliteit bij toetreding tot de N.V. Waterleidingmaatschappij Midden-Zeeland.</unittitle>
                            <unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Noord-Brabant</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>679, 1155</unitid>
                            <unittitle>Tilburg.</unittitle>
                            <unitdate calendar="gregorian" normal="1936/1961" era="ce">1936-1961</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905799">679</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/118(252)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Tilburgsche Waterleiding Maatschappij, tarieven,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905800">1155</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/118(780)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake het door de Tilburgsche Waterleiding Maatschappij ingediend verzoek tot verhoging van de watertarieven,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905801">878</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/299(552)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de tarieven van de in Noord-Brabant of in deze provincie leverende waterleidingbedrijven.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>914-915</unitid>
                            <unittitle>Breda, NV Waterleidingmaatschappij Noord-West-Brabant; nota's betreffende het bepalen van de overnemingssom van het in de gemeente gelegen voorzieningsgebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1950/1951" era="ce">1950-1951</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63905803">914</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/055(474)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63905805">915</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/055(475)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905806">1208</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/033(850)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Goirle, gemeentelijk waterleidingbedrijf; financiële aspecten.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unittitle>Limburg</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63905808">1541</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1974-005(1168)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Heerlen, bepaling overnemingswaarde van het drinkwaterbedrijf van de BV Industriële Maatschappij.</unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905809">945</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/269(488)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55b9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Limburgsche Waterleidingmaatschappij NV, bepaling van de overnemingswaarde van de eigendommen gevestigd te 's-Gravenhage.</unittitle>
                            <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905810">1228</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/108(874)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55ba-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Midden- en Noord-Limburg, NV Waterleidingmaatschappij; nota inzake eventuele overneming van het pompstation van de Staatsmijn Beatrix.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63905811">1229</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/192(875)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-55bb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vaals, gemeente; bepaling van de waarde der eigendommen van het waterleidingbedrijf.</unittitle>
                            <unitdate calendar="gregorian" normal="1956/1964" era="ce">1956-1964</unitdate>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">63</unitid>
                    <unittitle>Het adviseren inzake en het verlenen van medewerking aan het nemen van maatregelen om in geval van algehele storing toch te kunnen voorzien in de behoefte aan (drink)water.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905963">820</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/201(373)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-563f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Materiaalbehoefte voor de drinkwatervoorziening in Nederland in een toekomstige periode van 10 jaren (Plan Bouwnijverheid Drinkwatervoorziening).</unittitle>
                      <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Watersnoodramp Zeeland.</unittitle>
                      <unitdate calendar="gregorian" normal="1953/1954" era="ce">1953-1954</unitdate>
                    </did>
                    <odd>
                      <p>De watersnoodramp voltrok zich in de nacht van 31 januari op 1 februari 1953. Dijken in de provincies Zeeland en Zuid-Holland bleken niet bestand tegen de combinatie van springtij en een noordwester storm. Zowel op de eilanden als verder landinwaarts kwamen grote stukken land onder water te staan. Er kwamen 1835 mensen om het leven en er verdronk veel vee.</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63905967">874</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/298(549)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5643-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Nota inzake de drinkwatervoorziening van het door de Watersnoodramp van 1 februari 1953 getroffen gebied en de mogelijke ontwikkeling daarvan,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905968">2628</unitid>
                        <unitid audience="internal" type="obsolete">B1,15-72(18)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5644-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Coördineren van hulpverlening met betrekking tot de watervoorziening van door de watersnoodramp in februari 1953 getroffen gebieden in West-Nederland,<unitdate calendar="gregorian" normal="1953/1954" era="ce">1953-1954</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63905969">931</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/039(578)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5645-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Schade geleden door de N.V. Waterleidingmaatschappij Schouwen-Duiveland,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905970">1217</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/398(866)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5646-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake de noodwatervoorziening van het Academisch Ziekenhuis te Leiden.</unittitle>
                      <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905971">33</unitid>
                      <unitid audience="internal" type="obsolete">74-83/48</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5647-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Drinkwatervoorziening onder abnormale omstandigheden, inclusief rampenplannen met betrekking tot dit onderwerp.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">65</unitid>
                    <unittitle>Het adviseren inzake de bescherming van (drink) watervoorzieningen in het kader van de civiele verdediging.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Richtlijnen bescherming waterleidingsbedrijven met het oog op oorlogsomstandigheden [...], 's-Gravenhage 1974.
</item>
                      <item>Opm.: Deze handeling sluit aan op handelingen 701 t/m 704 van BSD Milieubeheer.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63905980">2942</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5650-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Luchtbeschermingsplannen ten bate van waterleidingbedrijven.</unittitle>
                      <unitdate calendar="gregorian" normal="1936/1941" era="ce">1936-1941</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905981">2935</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5651-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Advies aan de Alblasserdamsche Waterleiding Maatschappij inzake het voorkomen van chemisch-bacteriologische verontreiniging van de drinkwatervoorziening in oorlogsomstandigheden.</unittitle>
                      <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905982">350</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72/1</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5652-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan het totstandkomen van een circulaire bestemd voor de provinciale besturen inzake de plicht van openbare nutsbedrijven tot onderlinge hulpverlening bij de beschadiging door oorlogsgeweld van installaties van bedrijven.</unittitle>
                      <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905984">351</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72/2</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5653-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Enquête naar de door de waterleidingbedrijven in Nederland geleden schade in de oorlogsdagen van 10 tot 15 mei 1940.</unittitle>
                      <unitdate calendar="gregorian" normal="1940/1946" era="ce">1940-1946</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905985">352</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72/3</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5654-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verzekeren van de watervoorziening door de diverse waterleidingbedrijven ingeval van langdurige storingen door bombardementen.</unittitle>
                      <unitdate calendar="gregorian" normal="1942/1944" era="ce">1942-1944</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905986">745</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/018(384)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5655-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Drinkwatervoorziening van de gemeenten Boxtel en Oisterwijk mede in verband met de voorziening van de omliggende gemeenten.</unittitle>
                      <unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905987">273</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/8</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5656-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota van de Staf Militair Gezag sectie IX Openbare Werken inzake de drinkwatervoorziening van Nederland in de jaren 1940-1944.</unittitle>
                      <unitdate calendar="gregorian" normal="1945" era="ce">1945</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905988">2627</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72(17)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5657-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de mogelijkheden van inrichting van waterleidinggebouwen als luchtwachtposten in oorlogsomstandigheden.</unittitle>
                      <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905989">932</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/039(579)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5658-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Rapport inzake de aan de Waterleidingmaatschappij Schouwen-Duiveland uit te keren vergoedingen wegens oorlogsschade.</unittitle>
                      <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905990">354</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72/21</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5659-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verslagen van militaire oefeningen betreffende het in bedrijf houden van de drinkwatervoorziening in oorlogsomstandigheden.</unittitle>
                      <unitdate calendar="gregorian" normal="1961/1973" era="ce">1961-1973</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63905991">356</unitid>
                      <unitid audience="internal" type="obsolete">B1,15-72/23</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-565a-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het leveren van bijdragen voor de Handleidingen Gemeentelijke en Provinciale Civiele Verdediging.</unittitle>
                      <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">66</unitid>
                    <unittitle>Het adviseren inzake de milieuhinder van bedrijven.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Grondslag: Hinderwet.<lb></lb>Wet Verontreiniging Oppervlaktewater.<lb></lb>Lozingsbesluit bodembescherming.<lb></lb>Stortbesluit bodembescherming.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Opm.: Het betreft adviezen aan het bevoegd gezag in het belang van het grond- en drinkwater met betrekking tot aanvragen  van hinderwet-, emissie- en milieuvergunningen en -ontheffingen. <lb></lb>Handelingen in het kader van wijzigingen van de Hinderwet vallen onder de algemene handeling met betrekking tot wet- en regelgeving.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unittitle>ADVISEREN INZAKE MILIEUHINDER VAN BEDRIJVEN</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.9.01</unitid>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63906003">2313</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(3)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5665-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoekingen agrarische problemen door het Rijkslandbouwproefstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1944" era="ce">1938-1944</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906004">297</unitid>
                          <unitid audience="internal" type="obsolete">A 13-73/34</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5666-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bescherming van waterwingebieden tegen aardolieproducten en chemische stoffen.</unittitle>
                          <unitdate calendar="gregorian" normal="1958/1970" era="ce">1958-1970</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>242-252</unitid>
                          <unittitle>Chemische en bacteriologische onderzoeken van watermonsters afkomstig van diverse bedrijven.</unittitle>
                          <unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906006">242</unitid>
                            <unitid audience="internal" type="obsolete">74-83/250</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5668-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>A - M,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906007">243</unitid>
                            <unitid audience="internal" type="obsolete">74-83/251</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5669-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>N - Z,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                            </unittitle>
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                            <unitid audience="internal" type="obsolete">74-83/255</unitid>
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                              <extent>pak</extent>
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                          <unittitle>Opslag van radioactief afval in kleiformaties te Mol in België.</unittitle>
                          <unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
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                          <did>
                            <unitid identifier="63906019">36</unitid>
                            <unitid audience="internal" type="obsolete">74-83/51</unitid>
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                            <unitid identifier="63906020">37</unitid>
                            <unitid audience="internal" type="obsolete">74-83/52</unitid>
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                              <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
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                          <unittitle>Totstandkoming van voorschriften voor een eenduidige werkwijze bij het geven van adviezen ter bescherming van waterwingebieden voor de opslag en aflevering van olieprodukten.</unittitle>
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                            <extent>pak</extent>
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                          <unittitle>Onderzoek naar chemische waterverontreiniging door diverse bedrijven in het kader van het Milieuhygiënisch Gedrag Chemicaliën-project.</unittitle>
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                          <physdesc>
                            <extent>pak</extent>
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                          <unittitle>Organische verontreinigingen in drinkwatermonsters genomen in Katwijk (wijkje Synthese), vliegbasis Gilze-Rijen, wasserijen in 's-Gravenhage, Deurne, Megen en Macharen, Voorschoten.</unittitle>
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                          <unittitle>Mestproblematiek in waterwingebieden.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
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                        <unittitle>PROVINCIES</unittitle>
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                        <did>
                          <unitid type="series_code">1.9.02.1</unitid>
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                          <did>
                            <unitid>38-39, 1410</unitid>
                            <unittitle>Arnhem, gemeente; opslag van radioactief afval op het terrein van de NV tot Keuring van Elektrotechnische Materialen.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906028">38</unitid>
                              <unitid audience="internal" type="obsolete">74-83/53</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-567d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1978/1982" era="ce">1978-1982</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906029">1410</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1983-007(1411)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-567e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
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                            <did>
                              <unitid identifier="63906030">39</unitid>
                              <unitid audience="internal" type="obsolete">74-83/53</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-567f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Bijlagen,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
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                        </c>
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                          <did>
                            <unitid identifier="63906031">3042</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5680-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Tiel, aanwezigheid van bestrijdingsmiddelen in de vegetatie uit de omgeving van de chemische fabriek Verdugt.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
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                        <did>
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                          <unittitle>Noord-Holland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906034">2744</unitid>
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                            <unittitle>'s-Graveland, bescherming van de kwaliteit van het oppervlaktewater van de Loosdrechtse plassen en vaarten in het Gooi in verband met een hinderwetaanvraag voor een kininefabriek.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1932" era="ce">1931-1932</unitdate>
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                          <did>
                            <unitid identifier="63906035">1348</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1970-031(1038)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5683-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>IJmuiden, Hoogoventerreinen; onderzoek waterhuishouding.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906036">69</unitid>
                            <unitid audience="internal" type="obsolete">74-83/77</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5684-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Markerwaard, milieu-technische gevolgen van een eventuele tweede internationale luchthaven voor het toekomstig Spaarbekken IJsselmeer.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906037">46</unitid>
                            <unitid audience="internal" type="obsolete">74-83/60</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5685-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Naarden International Holland BV, ondergrondse lozing van afvalwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906038">1378</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1971-029(1070)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5686-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Naarden, NV Chemische Fabriek; infiltratie van afvalwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906039">3034</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5687-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Uithoorn, bodemverontreiniging door het chemisch bedrijf Cindu.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                          </did>
                        </c>
                      </c>
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                        <did>
                          <unitid type="series_code">1.9.02.3</unitid>
                          <unittitle>Zuid-Holland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906041">1598</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-003(1222)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5689-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Alphen aan den Rijn, grootte van de putverstopping en de te volgen regeneratieprocedure voor de pompputten van het pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906042">2745</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-568a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Kil, advies aan de Inspecteur van Volksgezondheid over het plan tot afvoer van afvalwater van de warmwaterroterijen nabij 's-Gravendeel in verband met waterwinning door de Kilwaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1952/1953" era="ce">1952-1953</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906043">1314</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1981-017(1367)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-568b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Leiden, effect van de vuilstortplaats Roomburg op de kwaliteit van het grondwater en het oppervlaktewater.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </did>
                        </c>
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                          <did>
                            <unitid>207-208, 1316</unitid>
                            <unittitle>Noordwijk, gemeente; bodemverontreiniging door de vuilstortplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906045">1316</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1981-013(1369)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-568d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport van W.F. Kooper, W. v. Duijvenbooden en A.A. Peeters,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906046">207</unitid>
                              <unitid audience="internal" type="obsolete">74-83/146</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-568e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906048">208</unitid>
                              <unitid audience="internal" type="obsolete">74-83/147</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-568f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906049">1766</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-008(1348)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5690-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rijnmond, Afvalverwerking; bodem- en grondwater van een terrein gelegen naast het bedrijf.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.9.02.4</unitid>
                          <unittitle>Noord-Brabant</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906051">197</unitid>
                            <unitid audience="internal" type="obsolete">74-83/134</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5692-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Dorst, onderzoek naar de vuilstortplaats Bavel nabij het waterwingebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906052">3264</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5693-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Heideveld, bescherming van de waterwinplaats tegen het gebruik van mijnsteen voor het opvullen van ontgonnen zilverzandgroeven.</unittitle>
                            <unitdate calendar="gregorian" normal="1959/1960" era="ce">1959-1960</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>43, 1319</unitid>
                            <unittitle>Oss, gemeente; organische microverontreinigingen in de bodem op het voormalige Philips-terrein.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906054">43</unitid>
                              <unitid audience="internal" type="obsolete">74-83/57</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5695-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906055">1319</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1981-002(1372)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5696-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Bepaling,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                              </unittitle>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906056">41</unitid>
                            <unitid audience="internal" type="obsolete">74-83/55</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5697-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vlijmen, gemeente; bodemverontreiniging bij het galvanisch bedrijf Gerjo.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>3029-3032</unitid>
                            <unittitle>Waalre, gemeente; bodemverontreiniging door een benzinestation.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>3029-3030</unitid>
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                              <did>
                                <unitid identifier="63906059">3029</unitid>
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                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63906060">3030</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-569b-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906061">3031</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-569c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergaderstukken en correspondentie van de Technische Werkgroep Bescherming Waterwingebied Aalsterweg,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906062">3032</unitid>
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                              <unittitle>Staten met resultaten van monsters uit waarnemingsputten,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
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                        </c>
                      </c>
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                        <did>
                          <unitid type="series_code">1.9.02.5</unitid>
                          <unittitle>Limburg</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906065">1287</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/455(946)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-569f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar invloed van de wateronttrekking op de grondwaterstanden in de omgeving door de Koninklijke Papierfabrieken Van Gelder Zonen NV te Apeldoorn.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906066">3260</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Amby, gemeente; vergunningverlening voor de bouw van een psychiatrisch centrum.</unittitle>
                            <unitdate calendar="gregorian" normal="1967/1970" era="ce">1967-1970</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906067">3262</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Amby en Caberg, consequenties voor de drinkwatervoorziening bij bestrijding van woelratten op de terreinen van de pompstations met de hiervoor bestemde bestrijdingsmiddelen.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906068">3265</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Borgharen, bouw van een magazijn op perceel B-1594 door Ankersmits Chemische Fabrieken BV te Maastricht.</unittitle>
                            <unitdate calendar="gregorian" normal="1977/1980" era="ce">1977-1980</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906069">3259</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Caberg, effecten vuilstort op af te graven terrein van de NV Belvédère nabij pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1967/1969" era="ce">1967-1969</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906070">3261</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grubbenvorst, bescherming van de waterwinplaats tegen het binnendringen van huisbrandolie en benzine vanwege bebouwingsuitbreidingsplannen.</unittitle>
                            <unitdate calendar="gregorian" normal="1960/1963" era="ce">1960-1963</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906071">3266</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Itteren, uitbreiding van het industriecomplex aan de Beatrixhaven en de gevolgen voor de waterwinning Borgharen-Itteren.</unittitle>
                            <unitdate calendar="gregorian" normal="1971/1972" era="ce">1971-1972</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906072">3258</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Maastricht, gemeente; vergunning voor ontgronding en het gevaar voor de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1965/1978" era="ce">1965-1978</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906073">3263</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Midden- en Noord-Limburg, bescherming waterwinplaatsen vanwege het gevaar van ongelukken met olietankauto's.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906074">1501</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/497(1136)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Mook, toelaatbaarheid van een vuilstort op het perceel A-3962 in verband met mogelijke grondwaterverontreiniging.</unittitle>
                            <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906075">1323</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1981-004(1377)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56a9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Ottersum, methylbromide in watermonsters afkomstig van de psychiatrische inrichting Maria Roepaan.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1173, 3267</unitid>
                            <unittitle>Reuver, bescherming van de waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1960/1974" era="ce">1960-1974</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906077">3267</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56ab-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Advies omtrent verontreinigd afvalwater van het recreatiecentrum Lommerbergen,<unitdate calendar="gregorian" normal="1960/1974" era="ce">1960-1974</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906079">1173</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/108(823)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56ac-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de waterwinplaats, gemeente Beesel, van de N.V. Waterleidingmaatschappij voor Midden- en Noord-Limburg,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                            </did>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906080">3268</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56ad-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Sittard, te nemen maatregelen ter bescherming van waterwinplaatsen met betrekking tot toekomstige industrieterreinen.</unittitle>
                            <unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906081">3257</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56ae-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Venlo, toelaatbaarheid van een oefen-landingsbaan voor Harriers nabij de waterwinplaats Groote Heide.</unittitle>
                            <unitdate calendar="gregorian" normal="1972/1974" era="ce">1972-1974</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906082">3256</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-56af-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Wittem, gemeente; bouw van een bungalow met ponystal met gierput bij het pompstation Roodborn.</unittitle>
                            <unitdate calendar="gregorian" normal="1962/1968" era="ce">1962-1968</unitdate>
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                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">67</unitid>
                    <unittitle>Het adviseren inzake de aanleg van bouw-, wegenbouw- en waterbouwkundige werken.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
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                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unittitle>ADVIEZEN INZAKE UITGEVOERDE WERKEN AAN STREEKWATERLEIDINGBEDRIJVEN IN NEDERLAND</unittitle>
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                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.01</unitid>
                        <unittitle>Groningen</unittitle>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906230">390</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(4)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5738-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>NV Waterleidingmaatschappij voor de provincie Groningen.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1972" era="ce">1912-1972</unitdate>
                          <physdesc>
                            <extent>pak</extent>
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                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906231">1618</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/518(1241)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5739-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Marum, resultaten van een pompproef verricht nabij de Jonkersvaart ten behoeve van een nieuw te stichten waterwinplaats.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906232">1022</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/274(643)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-573a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Winschoten, advies betreffende de modernisering van het pompstation van de waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.02</unitid>
                        <unittitle>Friesland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63906234">666</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/045(236)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-573c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Heerenveensche Waterleiding NV, verbouw van het pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>391-395</unitid>
                          <unittitle>Leeuwarden, NV Intercommunale Waterleiding Gebied.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1964" era="ce">1911-1964</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906236">391</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(5)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-573e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1921/1964" era="ce">1921-1964</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906237">392</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(5)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-573f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Boringen,<unitdate calendar="gregorian" normal="1915/1955" era="ce">1915-1955</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906238">393</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(6)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5740-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Technisch gedeelte,<unitdate calendar="gregorian" normal="1924/1954" era="ce">1924-1954</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906239">394</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(7)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5741-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Terschelling,<unitdate calendar="gregorian" normal="1911/1955" era="ce">1911-1955</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906241">395</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(7)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5742-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Heerenveen,<unitdate calendar="gregorian" normal="1912/1945" era="ce">1912-1945</unitdate>
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                          </did>
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                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.03</unitid>
                        <unittitle>Drenthe</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>NV Waterleidingmaatschappij Drenthe.</unittitle>
                          <unitdate calendar="gregorian" normal="1960/1971" era="ce">1960-1971</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906245">1109</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/078(733)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5745-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Mogelijkheid tot het vergroten van de capaciteit van de waterwinplaats Westenesch bij Emmen,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                            </unittitle>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906247">1607</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/078(1025)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5746-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de gevolgen van uitbreiding van de waterwinplaats Beilen,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906248">1369</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/078(1060)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5747-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de gevolgen van uitbreiding van de waterwinplaats Ruinerwold,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                          </did>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>763, 1034</unitid>
                          <unittitle>Assen, drinkwaterleiding van de gemeente.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1953" era="ce">1938-1953</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906252">763</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/164(314)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5749-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw van een nieuwe machine- en zuiveringsinstallatie,<unitdate calendar="gregorian" normal="1938/1939" era="ce">1938-1939</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906253">1034</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/164(524)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-574a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advies betreffende uitbreidingen,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>979, 1283</unitid>
                          <unittitle>Hoogeveen, gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1956/1967" era="ce">1956-1967</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906255">979</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/337(610)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-574c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vernieuwing en uitbreiding van het pompstation,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906256">1283</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/337(942)</unitid>
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                            <unittitle>Nota inzake een variant voor de nieuwbouw van een waterleidingpompstation,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                          <unitdate calendar="gregorian" normal="1917/1969" era="ce">1917-1969</unitdate>
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                          <did>
                            <unitid>396-397</unitid>
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                            <did>
                              <unitid identifier="63906260">396</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(8)</unitid>
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                                <unitdate calendar="gregorian" normal="1917/1969" era="ce">1917-1969</unitdate>
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                                <extent>pak</extent>
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                              <unitid identifier="63906261">397</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(9)</unitid>
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                                <unitdate calendar="gregorian" normal="1926/1949" era="ce">1926-1949</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
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                          <did>
                            <unitid identifier="63906262">399</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(12,14)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5753-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Borne,<unitdate calendar="gregorian" normal="1926/1951" era="ce">1926-1951</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906263">398</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(9)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5754-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Boringen,<unitdate calendar="gregorian" normal="1922/1956" era="ce">1922-1956</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906264">400</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(14)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5755-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Diepenveen, Olst, Wijhe en Rijssen,<unitdate calendar="gregorian" normal="1928/1953" era="ce">1928-1953</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906265">401</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(15)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5756-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Overige plaatsen,<unitdate calendar="gregorian" normal="1926/1965" era="ce">1926-1965</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906266">636</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/069(221)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5757-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Engelse Werk, bouw van een nieuw pompstation ten behoeve van de drinkwatervoorziening van de gemeente Zwolle.</unittitle>
                          <unitdate calendar="gregorian" normal="1935/1945" era="ce">1935-1945</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906267">496</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/043(23)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5758-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Enschede, gemeentedrinkwaterleiding; bodem- en wateronderzoek ten behoeve van de uitbreiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906269">1035</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/100(670)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5759-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kampen, gemeentelijk waterleidingbedrijf; vergroting van de capaciteit.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906270">1222</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/278(564)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-575a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oldenzaal, waterleidingbedrijf; vernieuwing filterinstallatie.</unittitle>
                          <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                        <did>
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                          <unittitle>Twente, aanleg van twee spaarbekkens.</unittitle>
                          <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
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                          <did>
                            <unitid identifier="63906272">1579</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-001(1208)</unitid>
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                            <unittitle>Onderzoek betreffende de eventuele aanleg,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                            <unitid identifier="63906273">1625</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1977-001(1248)</unitid>
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                            <unittitle>Onderzoek naar de grootte, duur en frequentie van peilvariaties en overbruggingsperiodes,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                      </c>
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                        <unitid type="series_code">1.2.05</unitid>
                        <unittitle>Gelderland</unittitle>
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                        <did>
                          <unitid identifier="63906275">408</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(22)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-575f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Waterleidingmaatschappij Gelderland.</unittitle>
                          <unitdate calendar="gregorian" normal="1936/1957" era="ce">1936-1957</unitdate>
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                            <extent>pak</extent>
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                          <unittitle>NV Waterleiding Oost-Gelderland.</unittitle>
                          <unitdate calendar="gregorian" normal="1913/1969" era="ce">1913-1969</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>402-404</unitid>
                            <unittitle>Algemeen.<unitdate calendar="gregorian" normal="1913/1969" era="ce">1913-1969</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906278">402</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(16)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5762-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1913/1933" era="ce">1913-1933</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906279">403</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(17)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5763-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1934/1954" era="ce">1934-1954</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906280">404</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(18)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5764-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1955/1969" era="ce">1955-1969</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906281">405</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(19)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5765-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Boringen, Lobith-Tolkamer,<unitdate calendar="gregorian" normal="1930/1961" era="ce">1930-1961</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906282">754</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/213(396)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5766-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw van een pompstation voor de bronwaterleiding van de gemeente Doesburg,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906283">406</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(20)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5767-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De Pol, IJsseldal,<unitdate calendar="gregorian" normal="1936/1961" era="ce">1936-1961</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906285">407</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(21)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5768-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Eibergen,<unitdate calendar="gregorian" normal="1930/1961" era="ce">1930-1961</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906286">912</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/042(565)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5769-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de mogelijkheid tot uitbreiding van de waterwinplaats Olden-Eibergen,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                            </unittitle>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906288">981</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/042(613)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-576a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de mogelijkheid tot het inrichten van een aanvullende waterwinplaats in het dal van de Oude IJssel,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906289">1240</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/042(889)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-576b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek betreffende de te stichten waterwinplaats Het Klooster,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906290">1242</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/139(892)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-576c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de mogelijkheden voor het stichten van een waterwinplaats te Harderwijk,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906291">561</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/040(86)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-576d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Apeldoorn, gemeentewaterleiding; advies met betrekking tot de uitbreiding van het pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906292">1025</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/031(646)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-576e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Heelsum en Doorwerth, advies betreffende de verbetering van de watertorens van de gemeentewaterleiding Wageningen.</unittitle>
                          <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906293">1528</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1974-031(1153)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-576f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Immerloopark, nota inzake een onderzoek ten behoeve van de stichting van een waterwinplaats nabij Arnhem.</unittitle>
                          <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906294">843</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/099(430)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5770-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lochem, nota inzake de herbouw van het in 1945 vernielde pompstation van de gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906295">566</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/031(89)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5771-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wageningen, uitgewerkt plan inzake de uitbreiding van het pompstation van de gemeentelijke bronwaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906296">1136</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/017(768)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5772-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zutphen, gemeente; nota inzake de ontwikkeling van het waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.06</unitid>
                        <unittitle>Utrecht</unittitle>
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                        <did>
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                          <unittitle>Waterleidingbedrijf Midden-Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1933/1971" era="ce">1933-1971</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906299">409</unitid>
                            <unitid audience="internal" type="obsolete">B456,13-73/23</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5775-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1933/1959" era="ce">1933-1959</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906300">410</unitid>
                            <unitid audience="internal" type="obsolete">B456,13-73/23</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5776-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1960/1971" era="ce">1960-1971</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Amersfoort, gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1953" era="ce">1926-1953</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906302">588</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/019(100)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5778-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advisering met betrekking tot de uitbreiding der zuiveringsinrichting van het pompstation,<unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906304">641</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/019(225)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5779-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Uitbreiding van de filterinstallatie,<unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906305">847</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/019(532)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-577a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verbetering van de transportleidingen en de reservoirruimte,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906306">1177</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/094(813)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-577b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kamerik, nota inzake modernisering en vergroting van de capaciteit van het pompstation van de drinkwaterleiding De Elf Gemeenten.</unittitle>
                          <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906307">1147</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/394(776)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-577c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Linschoten, gemeente; onderzoek naar de mogelijkheid tot het inrichten van een grondwaterwinplaats.</unittitle>
                          <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906308">916</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/338(567)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-577d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Utrecht, gemeentelijk drinkwatervoorziening; technische beschouwingen voor een aanvullend pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>827, 1178</unitid>
                          <unittitle>Vianen.</unittitle>
                          <unitdate calendar="gregorian" normal="1947/1962" era="ce">1947-1962</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906310">827</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/223(419)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-577f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Noodzakelijke verbeteringen voor het waterleidingbedrijf in de gemeente,<unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906311">1178</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/223(814)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5780-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de noodzakelijke uitbreidingen van het waterleidingbedrijf,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906312">1347</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/414(1036)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5781-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zeist, mogelijkheden van een uitbreiding van de waterwinplaats van het waterleidingbedrijf Midden-Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.07</unitid>
                        <unittitle>Noord-Holland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63906314">850</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/002(533)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5783-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bloemendaal, uitbreiding zuiveringswerken ten behoeve van de waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906315">1349</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/294(1039)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5784-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Den Helder, rapport inzake de toekomstige waterbehoefte in watervoorzieningsgebied als richtlijn voor de noodzakelijke voorzieningen die moeten worden aangebracht.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906316">921</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/294(571)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5785-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Huisduinen, verbetering van de zuiveringswerken voor het pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906318">1292</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/456(950)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5786-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>IJmuiden, nota inzake uitbreiding van de capaciteit van het waterleidingpompstation van het Staatsvissershavenbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906319">416</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(26)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5787-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Midden-Noord-Holland, waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1916" era="ce">1912-1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906321">781</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/135(338)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5788-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nieuwer-Amstel, nota inzake de uitbreiding van het opjaagstation van de gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>411-415</unitid>
                          <unittitle>Noord-Holland, Provinciaal Waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1913/1957" era="ce">1913-1957</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>411-413</unitid>
                            <unittitle>Algemeen.<unitdate calendar="gregorian" normal="1913/1920" era="ce">1913-1920</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>614 en 615 niet nader onder te verdelen</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63906328">411</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(24)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-578d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1913/1920" era="ce">1913-1920</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906329">412</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(24)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-578e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1913/1920" era="ce">1913-1920</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906330">413</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(24)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-578f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1916/1920" era="ce">1916-1920</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>414-415</unitid>
                            <unittitle>Diverse plaatsen, technisch gedeelte.<unitdate calendar="gregorian" normal="1913/1957" era="ce">1913-1957</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>Niet nader onder te verdelen</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63906334">414</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(25)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5793-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1913/1956" era="ce">1913-1956</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906335">415</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(25)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5794-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1919/1957" era="ce">1919-1957</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906336">168</unitid>
                          <unitid audience="internal" type="obsolete">74-83/194</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5795-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vogelenzang, advisering met betrekking tot de proefinstallatie Leiduin in het duingebied.</unittitle>
                          <unitdate calendar="gregorian" normal="1969/1975" era="ce">1969-1975</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>417-424</unitid>
                          <unittitle>West-Friesland.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1917" era="ce">1911-1917</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906338">417</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(27)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5797-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1911/1917" era="ce">1911-1917</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>418-420</unitid>
                            <unittitle>Boringen.<unitdate calendar="gregorian" normal="1912/1913" era="ce">1912-1913</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>Niet nader onder te verdelen</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63906342">418</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(28)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-579b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1912/1913" era="ce">1912-1913</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906343">419</unitid>
                              <unitid audience="internal" type="obsolete">B456,13-73/29</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-579c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1912/1913" era="ce">1912-1913</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906344">420</unitid>
                              <unitid audience="internal" type="obsolete">B456,13-73/29</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-579d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1912/1913" era="ce">1912-1913</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>421-422</unitid>
                            <unittitle>Mechanische zandanalyses.<unitdate calendar="gregorian" normal="1912/1913" era="ce">1912-1913</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906347">421</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(30)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-579f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1912" era="ce">1912</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906349">422</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(31)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1913" era="ce">1913</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>423-424</unitid>
                            <unittitle>Wateronderzoek.<unitdate calendar="gregorian" normal="1912/1914" era="ce">1912-1914</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906351">423</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(32)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1912" era="ce">1912</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906352">424</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(33)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1913/1914" era="ce">1913-1914</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.08</unitid>
                        <unittitle>Zuid-Holland</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>433-438</unitid>
                          <unittitle>Drinkwaterleidingstichtingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1971" era="ce">1911-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906355">433</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(43)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De Drie Gemeenten; Roelofarendsveen,<unitdate calendar="gregorian" normal="1935/1955" era="ce">1935-1955</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906356">434</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(44)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De Elf Gemeenten; Woerden,<unitdate calendar="gregorian" normal="1931/1968" era="ce">1931-1968</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906357">435</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(45)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De Tien Gemeenten; Pijnacker,<unitdate calendar="gregorian" normal="1921/1926" era="ce">1921-1926</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906358">436</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(46)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57a9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De Vijf Gemeenten; Bergambacht,<unitdate calendar="gregorian" normal="1933/1962" era="ce">1933-1962</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>437-438</unitid>
                            <unittitle>De Vlietstreek; Voorburg, Rijswijk en Leidschendam.<unitdate calendar="gregorian" normal="1911/1971" era="ce">1911-1971</unitdate>
                            </unittitle>
                          </did>
                          <odd>
                            <p>Niet nader onder te verdelen</p>
                          </odd>
                          <c level="file">
                            <did>
                              <unitid identifier="63906362">437</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(47,48)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ad-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1911/1971" era="ce">1911-1971</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906363">438</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(47)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ae-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1932/1946" era="ce">1932-1946</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906364">1632</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/539(1256)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57af-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Alblasserdam, beoordeling van de doelmatigheid van de watervoorziening in het gebied van de NV Alblasserdamsche Waterleiding ten behoeve van de uitbreiding van de watervoorzieningssituatie.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>957, 1144</unitid>
                          <unittitle>Alphen aan den Rijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1955/1961" era="ce">1955-1961</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906367">957</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/174(593)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57b1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Waterleidingbedrijf, sanering en uitbreiding van het pompstation,<unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                            </unittitle>
                          </did>
                        </c>
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                          <unitid identifier="63906370">439</unitid>
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                          <unittitle>Brielle; Waterleidingcomité voor Voorne, Putten en de Hoeksche Waard.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1950" era="ce">1911-1950</unitdate>
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                          <unittitle>Dordrecht, onderzoek naar de mogelijkheid van het stichten van een grondwaterpomp-station.</unittitle>
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                          <unitid identifier="63906372">851</unitid>
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                          <unittitle>De Drie Gemeenten, Stichting Drinkwaterleiding; rapport inzake de verbetering van het leidingnet.</unittitle>
                          <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                        <did>
                          <unitid identifier="63906373">1046</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/350(657)</unitid>
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                          <unittitle>Dubbeldam, gemeente; ontwikkeling van het waterleidingbedrijf.</unittitle>
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                        <did>
                          <unitid identifier="63906374">713</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/198(198)</unitid>
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                          <unittitle>Gorinchem, waterleiding van de gemeente; stichten van een grondwaterpompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
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                        <did>
                          <unitid identifier="63906375">428</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(37)</unitid>
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                          <unittitle>Gouda, Goudse Waterleidingmaatschappij.</unittitle>
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                            <extent>pak</extent>
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                        <did>
                          <unitid identifier="63906376">584</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/132(148)</unitid>
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                          <unittitle>'s-Graveland, advies omtrent de aanleg van een pompstation van de gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
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                        <did>
                          <unitid identifier="63906377">1079</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/022(706)</unitid>
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                          <unittitle>Hendrik-Ido-Ambacht, nota inzake de uitbreiding van het gemeentelijk waterleidingbedrijf.</unittitle>
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                            <unitid identifier="63906380">718</unitid>
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                            <unittitle>Onderzoek naar de verbetering van de zuiveringswerken op het pompstation van de gemeentewaterleiding,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                          <did>
                            <unitid identifier="63906381">859</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/134(538)</unitid>
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                            <unittitle>Het verbeteren van de waterzuiveringswerken van het pompstation van de waterleiding,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        <did>
                          <unitid identifier="63906383">1009</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/134(512)</unitid>
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                          <unittitle>Hillegom, Lisse, Sassenheim en Warmond, gemeenten; rapport inzake de eventuele uitbreiding van de drinkwatervoorziening in de nabije toekomst.</unittitle>
                          <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                        <did>
                          <unitid identifier="63906385">3116</unitid>
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                          <unitdate calendar="gregorian" normal="1944/1972" era="ce">1944-1972</unitdate>
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                        <did>
                          <unitid identifier="63906386">426</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(35)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57c1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kedichem, drinkwaterleiding De Lingemond.</unittitle>
                          <unitdate calendar="gregorian" normal="1928/1937" era="ce">1928-1937</unitdate>
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                        <did>
                          <unitid identifier="63906387">902</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/107(467)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57c2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Koudekerk - Hoogmade - Rijpwetering - Roelofsarendsveen, onderzoek voor de bepaling van het tracé voor het leggen van een nieuwe transportleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                          <unitid>3114-3115</unitid>
                          <unittitle>Leidsche Duinwater Maatschappij NV.</unittitle>
                          <unitdate calendar="gregorian" normal="1911/1938" era="ce">1911-1938</unitdate>
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                            <unitid identifier="63906389">3114</unitid>
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                              <unitdate calendar="gregorian" normal="1911/1931" era="ce">1911-1931</unitdate>
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                              <extent>pak</extent>
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                            <unitid identifier="63906390">3115</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57c5-79fa-e053-09f0900a5ea8</unitid>
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                              <unitdate calendar="gregorian" normal="1932/1938" era="ce">1932-1938</unitdate>
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                              <extent>pak</extent>
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                        <did>
                          <unitid identifier="63906391">425</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(34)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57c6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Meerkerk, drinkwaterleiding Alblasserwaard en Vijfheerenlanden.</unittitle>
                          <unitdate calendar="gregorian" normal="1925/1971" era="ce">1925-1971</unitdate>
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                        <did>
                          <unitid identifier="63906392">427</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(36)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57c7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Middelharnis, drinkwaterleiding Goeree-Overflakkee.</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1973" era="ce">1910-1973</unitdate>
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                            <extent>pak</extent>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906393">983</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/135(616)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57c8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nieuwer-Amstel, waterbedrijf; nota inzake de uitbreiding van het distributienet.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                        <did>
                          <unitid>431-432</unitid>
                          <unittitle>Oostelijk IJsselmonde.</unittitle>
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                          <did>
                            <unitid identifier="63906395">431</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(41)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ca-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Barendrecht en Ridderkerk,<unitdate calendar="gregorian" normal="1958/1973" era="ce">1958-1973</unitdate>
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                              <extent>pak</extent>
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                          <did>
                            <unitid identifier="63906396">432</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(42)</unitid>
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                            <physdesc>
                              <extent>pak</extent>
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                        <did>
                          <unitid identifier="63906397">994</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/180(625)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57cc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ridderkerk, waterleiding van de gemeente; bouw van een pompstation voor grondwaterwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                        <did>
                          <unitid identifier="63906398">925</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/107(573)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57cd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rijnsaterwoude, uitbreiding leidingnet.</unittitle>
                          <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                        <did>
                          <unitid identifier="63906400">825</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/206(376)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rotterdam, drinkwatervoorziening van de gemeente; nota inzake de wederopbouw.</unittitle>
                          <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
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                        <did>
                          <unitid identifier="63906401">1038</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57cf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schipluiden, nota over de mogelijkheden ter verbetering van de aanvoer en druk in het voorzieningsgebied van waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                        <did>
                          <unitid identifier="63906403">947</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/271(489)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57d0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schoonhoven, de noodzakelijke vernieuwingen aan het pompstation van het gemeentelijk waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
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                          <unitid>1216, 1568</unitid>
                          <unittitle>Sliedrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1964/1969" era="ce">1964-1969</unitdate>
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                          <did>
                            <unitid identifier="63906406">1216</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/111(865)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57d2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake het verbeteren van de zuivering en het vergroten van de capaciteit van het pompstation van de gemeentewaterleiding,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                          <did>
                            <unitid identifier="63906407">1568</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/016(1009)</unitid>
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                            <unittitle>Onderzoek naar een doelmatige drinkwatervoorziening in de Krimpenerwaard en Gouda en omgeving,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                        <did>
                          <unitid identifier="63906408">768</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/180(323)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57d4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Slikkerveer, het herstellen van de watertoren van Ridderkerk.</unittitle>
                          <unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
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                        <did>
                          <unitid identifier="63906409">885</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/246(452)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57d5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vlaardingen, verbetering van het waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                        <did>
                          <unitid identifier="63906410">767</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/173(322)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57d6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorhout, pompstation van het gemeentelijk waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
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                        <did>
                          <unitid identifier="63906411">900</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/090(466)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57d7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wassenaar, gemeentelijk waterbedrijf; de verbetering en uitbreiding van het pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                          <unittitle>Westlandsche Drinkwaterleidingmaatschappij NV.</unittitle>
                          <unitdate calendar="gregorian" normal="1919/1973" era="ce">1919-1973</unitdate>
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                          <did>
                            <unitid identifier="63906413">766</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/115(321)</unitid>
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                            <unittitle>Het uitbreiden van het pompstation,<unitdate calendar="gregorian" normal="1939/1940" era="ce">1939-1940</unitdate>
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                          <did>
                            <unitid identifier="63906414">429</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(39)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57da-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen, technisch gedeelte,<unitdate calendar="gregorian" normal="1919/1950" era="ce">1919-1950</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                          <did>
                            <unitid identifier="63906415">430</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(40)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57db-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Technisch gedeelte,<unitdate calendar="gregorian" normal="1934/1973" era="ce">1934-1973</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906416">907</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/255(471)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57dc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Westmaas en Mijnsheerenland, gemeenten; nota inzake de tijdelijke verbetering van de watervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                        </did>
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                        <unitid type="series_code">1.2.09</unitid>
                        <unittitle>Zeeland</unittitle>
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                        <did>
                          <unitid identifier="63906418">963</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/128(602)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57de-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Domburg, rapport van een onderzoek naar de verbeteringen die moeten worden aangebracht aan de watertoren.</unittitle>
                          <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                        <did>
                          <unitid identifier="63906420">1039</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/039(679)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57df-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haamstede, nota inzake uitbreiding van de waterwinplaats van het pompstation De Blinkert der NV Waterleidingmaatschappij Schouwen-Duiveland.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                          <did>
                            <unitid identifier="63906422">443</unitid>
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                            <unittitle>Domburg en Vlissingen,<unitdate calendar="gregorian" normal="1914/1952" era="ce">1914-1952</unitdate>
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                              <extent>pak</extent>
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                          </did>
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                        <c otherlevel="filegrp" level="otherlevel">
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                            <did>
                              <unitid identifier="63906424">444</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(55)</unitid>
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                                <unitdate calendar="gregorian" normal="1915/1937" era="ce">1915-1937</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906425">445</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(56)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57e4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1954/1956" era="ce">1954-1956</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906426">446</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(57)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57e5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1957/1959" era="ce">1957-1959</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>447-448</unitid>
                            <unittitle>Technisch gedeelte.<unitdate calendar="gregorian" normal="1937/1953" era="ce">1937-1953</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906428">447</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(58,59)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57e7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1937/1939" era="ce">1937-1939</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906429">448</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(59,60)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57e8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1949/1953" era="ce">1949-1953</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906430">449</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(61)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57e9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verslagen en nota's,<unitdate calendar="gregorian" normal="1960/1972" era="ce">1960-1972</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2856-2857, 2946</unitid>
                          <unittitle>Midden-Zeeland en Zuid-Beveland , NV Waterleidingmaatschappijen; Grote Commissie.</unittitle>
                          <unitdate calendar="gregorian" normal="1949/1965" era="ce">1949-1965</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906432">2856</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57eb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1949/1956" era="ce">1949-1956</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906433">2857</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ec-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1957/1961" era="ce">1957-1961</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906434">2946</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ed-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1962/1965" era="ce">1962-1965</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                        <did>
                          <unitid identifier="63906435">460</unitid>
                          <unitid audience="internal" type="obsolete">B456,13-73/72</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ee-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noord-Beveland, Commissie Watervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1934/1953" era="ce">1934-1953</unitdate>
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                        <did>
                          <unitid>450-451</unitid>
                          <unittitle>Schouwen-Duiveland, NV Waterleidingmaatschappij (algemeen).</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1970" era="ce">1910-1970</unitdate>
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                          <did>
                            <unitid identifier="63906439">450</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(62)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1910/1928" era="ce">1910-1928</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906440">451</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(63)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1929/1970" era="ce">1929-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
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                      </c>
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                        <did>
                          <unitid>910, 2689-2690</unitid>
                          <unittitle>Tholen, NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1916/1958" era="ce">1916-1958</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906443">2689</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1916/1929" era="ce">1916-1929</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906444">2690</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1930/1958" era="ce">1930-1958</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906445">910</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/020(473)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Noodzakelijke herstellingen en uitbreidingen aan de werken,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                      </c>
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                        <did>
                          <unitid>452-459, 3049</unitid>
                          <unittitle>Zeeuwsch-Vlaanderen, NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1969" era="ce">1910-1969</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>453-457, 3049</unitid>
                            <unittitle>Algemeen.<unitdate calendar="gregorian" normal="1910/1969" era="ce">1910-1969</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906448">453</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(65)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1910/1923" era="ce">1910-1923</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906449">454</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(66)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57f9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1924/1928" era="ce">1924-1928</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906450">455</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(67)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57fa-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906451">3049</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57fb-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1930/1934" era="ce">1930-1934</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906452">456</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(68)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57fc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1935/1941" era="ce">1935-1941</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906453">457</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(69)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57fd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1942/1969" era="ce">1942-1969</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906454">452</unitid>
                            <unitid audience="internal" type="obsolete">B456,13-73/64</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57fe-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hydrologisch onderzoek,<unitdate calendar="gregorian" normal="1934/1940" era="ce">1934-1940</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906455">458</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(70)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-57ff-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek en bescherming waterwinplaatsen,<unitdate calendar="gregorian" normal="1944/1962" era="ce">1944-1962</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906456">459</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(71)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5800-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Tarieven, Oost- en West-Zeeuws Vlaanderen, Clinge, Hontenisse, St. Janssteen, Graauw en Langendam,<unitdate calendar="gregorian" normal="1934/1960" era="ce">1934-1960</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>440-442</unitid>
                          <unittitle>Zuid-Beveland, NV Waterleiding Maatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1909/1967" era="ce">1909-1967</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906458">440</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(50)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5802-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1909/1961" era="ce">1909-1961</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906459">441</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(51)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5803-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Huijbergen,<unitdate calendar="gregorian" normal="1956/1967" era="ce">1956-1967</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906460">442</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(52)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5804-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Ossendrecht,<unitdate calendar="gregorian" normal="1949/1957" era="ce">1949-1957</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.10</unitid>
                        <unittitle>Noord-Brabant</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63906462">951</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/060(492)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5806-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bergen op Zoom, nota inzake het vergroten van de reinwaterberging en van de capaciteit van het hoofdbuizennet van de gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906463">663</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/055(190)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5807-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Breda, advies omtrent de vergroting van de reinwaterbergruimte van de waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906465">1252</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/012(903)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5808-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eindhoven, gemeente; onderzoek naar de mogelijkheid tot het inrichten van een tweede waterwinplaats in de omgeving van Geldrop en Heeze.</unittitle>
                          <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906466">1485</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/011(980)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5809-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Genderen, onderzoek naar de mogelijkheden van uitbreiding van de waterwinplaats.</unittitle>
                          <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906468">1058</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/085(682)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-580a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haaren, onderzoek naar de mogelijkheid van het stichten van een pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906470">1250</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/003(900)</unitid>
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                          <unittitle>Huijbergen, onderzoek naar de mogelijkheid tot uitbreiding van de waterwinplaats.</unittitle>
                          <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                          <unittitle>Noord-West-Brabant, NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1918/1973" era="ce">1918-1973</unitdate>
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                          <did>
                            <unitid identifier="63906472">461</unitid>
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                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1918/1967" era="ce">1918-1967</unitdate>
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                              <extent>pak</extent>
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                          <did>
                            <unitid identifier="63906473">462</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(75)</unitid>
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                            <physdesc>
                              <extent>pak</extent>
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                        <did>
                          <unitid>463-465</unitid>
                          <unittitle>Oost-Brabant, NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1921/1969" era="ce">1921-1969</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
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                          </did>
                          <odd>
                            <p>Niet nader onder te verdelen</p>
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                          <c level="file">
                            <did>
                              <unitid identifier="63906478">463</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(76)</unitid>
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                                <unitdate calendar="gregorian" normal="1930/1965" era="ce">1930-1965</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                            <did>
                              <unitid identifier="63906479">464</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(76)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5814-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1933/1969" era="ce">1933-1969</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906480">465</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(77,78,79)</unitid>
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                            <unittitle>Diverse gemeenten,<unitdate calendar="gregorian" normal="1921/1941" era="ce">1921-1941</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906481">1059</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/140(683)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5816-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Roosendaal, uitbreiding voorfilters waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906482">1251</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/011(901)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5817-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schijf, onderzoek naar de mogelijkheid tot het inrichten van een grondwaterwinplaats.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1970" era="ce">1965-1970</unitdate>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>876, 1392</unitid>
                          <unittitle>Tilburgsche Waterleiding Maatschappij NV.</unittitle>
                          <unitdate calendar="gregorian" normal="1953/1971" era="ce">1953-1971</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906484">876</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/118(550)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5819-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Uitbreiding van de werken,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906485">1392</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/118(1078)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-581a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de invloed van de uitbreiding van de waterwinplaats op de grondwaterstijghoogten in de omgeving,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                          </did>
                        </c>
                      </c>
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                        <did>
                          <unitid identifier="63906487">677</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/101(250)</unitid>
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                          <unittitle>Waalwijk, uitbreiding en verbetering van de zuiveringswerken van het gemeentelijk waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.2.11</unitid>
                        <unittitle>Limburg</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Gebruik van grindgaten als spaarbekkens voor de drink- en industriewatervoorziening in de provincie.</unittitle>
                          <unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906490">169</unitid>
                            <unitid audience="internal" type="obsolete">74-83/195</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-581e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906491">1540</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/500(1165,1166)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-581f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>172-173</unitid>
                            <unittitle>Gemeente Panheel.<unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906493">172</unitid>
                              <unitid audience="internal" type="obsolete">74-83/198</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5821-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906494">173</unitid>
                              <unitid audience="internal" type="obsolete">74-83/198</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5822-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Projectgroep,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906495">736</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/141(300)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5823-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Heerlen, bouw van een pompstation te Caumer van de gemeentewaterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Maastricht, gemeentelijk waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1950/1971" era="ce">1950-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906497">919</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/044(477)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5825-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de inrichting van een waterwinplaats onder Caberg,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906498">1291</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/044(907)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5826-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de mogelijkheid tot opheffing of verplaatsing van pompstations voor de drinkwatervoorziening, in verband met de ruimtelijke ontwikkeling van de Maastrichtse agglomeratie,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906499">1397</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/044(1080)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5827-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de mogelijkheid van verplaatsing van het waterwingebied Amby,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>466-475</unitid>
                          <unittitle>Midden- en Noord-Limburg, NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1917/1972" era="ce">1917-1972</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906501">475</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(92,93,94)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5829-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Venray,<unitdate calendar="gregorian" normal="1942/1972" era="ce">1942-1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906503">466</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(80)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-582a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Arcen en Velden,<unitdate calendar="gregorian" normal="1938/1971" era="ce">1938-1971</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906504">467</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(81)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-582b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gennep,<unitdate calendar="gregorian" normal="1917/1946" era="ce">1917-1946</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906505">468</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(82,83)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-582c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Beegden,<unitdate calendar="gregorian" normal="1954/1971" era="ce">1954-1971</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906506">469</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(84,85)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-582d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Beesel, Belfeld en Reuver,<unitdate calendar="gregorian" normal="1950/1971" era="ce">1950-1971</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906507">470</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(86)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-582e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gennep,<unitdate calendar="gregorian" normal="1940/1971" era="ce">1940-1971</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906508">471</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(87)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-582f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grubbenvorst,<unitdate calendar="gregorian" normal="1956/1970" era="ce">1956-1970</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906509">472</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(88)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5830-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Helden, Koningsbosch, bewesten de Maas en Montfort,<unitdate calendar="gregorian" normal="1952/1968" era="ce">1952-1968</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906510">473</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(89,90)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5831-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Helden,<unitdate calendar="gregorian" normal="1953/1970" era="ce">1953-1970</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906511">474</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(91)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5832-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nederweert, Pey en Stramproy,<unitdate calendar="gregorian" normal="1943/1972" era="ce">1943-1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906512">1500</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1973-001(1135)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5833-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Mook, onderzoek naar de mogelijkheden van een nieuwe waterwinplaats.</unittitle>
                          <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906513">891</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/253(459)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5834-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sittard, gemeente; voorzieningen aan het waterleidingbedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>216, 1271</unitid>
                          <unittitle>Tegelen.</unittitle>
                          <unitdate calendar="gregorian" normal="1966/1974" era="ce">1966-1974</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906515">1271</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/260(929)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5836-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake uitbreiding van de capaciteit van het waterleidingbedrijf,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906516">216</unitid>
                            <unitid audience="internal" type="obsolete">74-83/151</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5837-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het verstrekken van adviezen bij de aanleg van pompputten ten behoeve van de waterwinning van het Gemeentelijk Waterleidingbedrijf,<unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                            </unittitle>
                          </did>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906517">954</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/122(494)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5838-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Venlo, gemeentelijke waterleiding; het stichten van een nieuw pompstation.</unittitle>
                          <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906519">1400</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/324(1083)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5839-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Weert, onderzoek naar de mogelijkheid tot het inrichten van een tweede grondwaterwinplaats aan de Hoogbosweg.</unittitle>
                          <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>476-478</unitid>
                          <unittitle>Zuid-Limburg, NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1910/1973" era="ce">1910-1973</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>476-477</unitid>
                            <unittitle>Algemeen.<unitdate calendar="gregorian" normal="1910/1943" era="ce">1910-1943</unitdate>
                            </unittitle>
                          </did>
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                              <unitid identifier="63906522">476</unitid>
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                              <unittitle>
                                <unitdate calendar="gregorian" normal="1910/1925" era="ce">1910-1925</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                            <did>
                              <unitid identifier="63906523">477</unitid>
                              <unitid audience="internal" type="obsolete">B456/13-73(95)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-583d-79fa-e053-09f0900a5ea8</unitid>
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                                <unitdate calendar="gregorian" normal="1926/1943" era="ce">1926-1943</unitdate>
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                                <extent>pak</extent>
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                            <unitid identifier="63906524">478</unitid>
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                        <did>
                          <unitid>2478-2481, 2486-2487</unitid>
                          <unittitle>Drinkwatervoorziening van de zuidelijke polders.</unittitle>
                          <unitdate calendar="gregorian" normal="1943/1972" era="ce">1943-1972</unitdate>
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                        <odd>
                          <p>Met hiaten</p>
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                          <did>
                            <unitid identifier="63906530">2478</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(213)</unitid>
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                            <unittitle>
                              <unitdate calendar="gregorian" normal="1943/1954" era="ce">1943-1954</unitdate>
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                          <did>
                            <unitid identifier="63906532">2479</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(213)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5844-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1955/1957" era="ce">1955-1957</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906533">2480</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(213)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5845-79fa-e053-09f0900a5ea8</unitid>
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                              <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                          <did>
                            <unitid identifier="63906534">2481</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(213,217)</unitid>
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                              <unitdate calendar="gregorian" normal="1962/1967" era="ce">1962-1967</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906535">2486</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(217)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5847-79fa-e053-09f0900a5ea8</unitid>
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                              <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906536">2487</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(217)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5848-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1969/1972" era="ce">1969-1972</unitdate>
                            </unittitle>
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                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906537">1211</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/349(853)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5849-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oostvaardersdiep, nota inzake de drinkwatervoorziening van de bij het gemaal annex sluis te bouwen woningen en dienstgebouwen.</unittitle>
                          <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unittitle>OVERIGE ADVIEZEN</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.3.01</unitid>
                        <unittitle>Groningen</unittitle>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906540">2284</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(10)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-584c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verwachte waterbezwaar van de ingraving in Rijksweg 34.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906541">2319</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(40)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-584d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Boer, Ten; verdampingsvraagstukken en grondwaterstanden in de Rottegatspolder.</unittitle>
                          <unitdate calendar="gregorian" normal="1944/1956" era="ce">1944-1956</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906542">911</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/305(563)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-584e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Delfzijl, onderzoek betreffende het te verwachten waterbezwaar in de bouwput voor een schutsluizencomplex.</unittitle>
                          <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906543">2295</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(9)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-584f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eemskanaal, advies aan Provinciale Waterstaat te Groningen over aanleg en verbetering.</unittitle>
                          <unitdate calendar="gregorian" normal="1953/1954" era="ce">1953-1954</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906544">2285</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(11)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5850-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Groninger Wadden, verwachte zoute kwel in een inpoldering langs de kust.</unittitle>
                          <unitdate calendar="gregorian" normal="1952/1954" era="ce">1952-1954</unitdate>
                        </did>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2315, 2318</unitid>
                          <unittitle>Lauwerszee.</unittitle>
                          <unitdate calendar="gregorian" normal="1954/1961" era="ce">1954-1961</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906547">2315</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(4)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5852-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Aanleg van een nieuwe kweldijk,<unitdate calendar="gregorian" normal="1954/1958" era="ce">1954-1958</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906548">2318</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(6)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5853-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw  van een afsluitdam,<unitdate calendar="gregorian" normal="1956/1961" era="ce">1956-1961</unitdate>
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                          </did>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.3.02</unitid>
                        <unittitle>Friesland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63906550">2286</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5855-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dokkumer Nieuwe Zijlen, bemaling van de bouwput voor een nieuwe schutsluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906551">2287</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(13)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5856-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Harlingen, bemaling van de bouwput ten behoeve van de nieuwe keersluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1955" era="ce">1938-1955</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906552">167</unitid>
                          <unitid audience="internal" type="obsolete">74-83/192</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5857-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Luxwoude, het verstrekken van adviezen over het bemalen en het draineren van de bouwput ten behoeve van de fietstunnel in Rijksweg 43 gedeelte Heerenveen-Beetsterzwaag.</unittitle>
                          <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906553">1619</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1977-001(1242)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5858-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Uitwellingerga, pompproeven ten behoeve van de aanleg van de tunnel onder het Prinses Margrietkanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.3.03</unitid>
                        <unittitle>Drenthe</unittitle>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906555">2289</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(16)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-585a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Assen, ontwatering van een ingraving ten behoeve van tunnels bij de kruising van de Dennenweg met de provinciale weg Assen-Hoogeveen.</unittitle>
                          <unitdate calendar="gregorian" normal="1962/1969" era="ce">1962-1969</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906556">2290</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(17)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-585b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Beilen, proefbemaling voor een tunnel onder de autoweg Assen-Hoogeveen.</unittitle>
                          <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906557">2291</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(18)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-585c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hoogeveen, verwachte waterbezwaar bij de spoorwegonderdoorgang.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906558">2294</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(14)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-585d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hoogeveensche Vaart, bouw van de Nieuwebrugsluis in een omlegging.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1968" era="ce">1963-1968</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906559">2292</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(19)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-585e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Peelo, bemaling van een bouwput ten behoeve van een schutsluis in het Noord-Willemskanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906560">2288</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(15)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-585f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Stieltjeskanaal, bemaling van de bouwput voor de nieuwe sluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1967/1969" era="ce">1967-1969</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906562">1111</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/379(734)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5860-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vries (Drenthe), onderzoek naar het te verwachten waterbezwaar in de bouwputten voor de schutsluizen III en IV in het Noord-Willemskanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906564">2293</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(20)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5861-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Westerbork, bemaling ten behoeve van zandwinning in het stroomgebied De Vischma van de Westerborkerstroom.</unittitle>
                          <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                        </did>
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                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.3.04</unitid>
                        <unittitle>Overijssel</unittitle>
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                        <did>
                          <unitid>896, 2296</unitid>
                          <unittitle>Almelo; veenleiding, grondduiker.</unittitle>
                          <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906567">896</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/263(464)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5864-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906568">2296</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(21)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5865-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Waterbezwaar in de bouwput,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                          </did>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>841, 2297</unitid>
                          <unittitle>Deventer, waterbezwaar in de bouwput voor de schutsluis nabij het Hartenaasje.</unittitle>
                          <unitdate calendar="gregorian" normal="1942/1948" era="ce">1942-1948</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906570">2297</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(22)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5867-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwachting,<unitdate calendar="gregorian" normal="1942/1947" era="ce">1942-1947</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906571">841</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/227(429)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5868-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                          </did>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906572">835</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/133(526)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5869-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kampen, onderzoek naar het te verwachten waterbezwaar in de bouwput voor de Roggebotsluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906573">1031</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/133(521)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-586a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ketelmond; onderzoek naar het te verwachten waterbezwaar in de bouwput voor een gemaal, een schutsluis en een inlaatduiker.</unittitle>
                          <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1024, 2298</unitid>
                          <unittitle>Spoolde, bouwput voor de schutsluis in het te graven kanaal IJssel-Zwarte Water.</unittitle>
                          <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906575">2298</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(23)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-586c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bronbemaling,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                            </unittitle>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906576">1024</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/345(645)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-586d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                            </unittitle>
                          </did>
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                      </c>
                      <c level="file">
                        <did>
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                          <unittitle>Wanneperveen, onderzoek naar het te verwachten waterbezwaar in de bouwput voor de Beukersschutsluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                          <did>
                            <unitid identifier="63906581">837</unitid>
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                          <did>
                            <unitid identifier="63906582">2300</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(25)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5872-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bronbemaling ten behoeve van de nieuw te maken Beukersschutssluis,<unitdate calendar="gregorian" normal="1956/1957" era="ce">1956-1957</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906584">2314</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(38)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5874-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Terreindrainage ten behoeve van de IJsselcentrale te Harculo,<unitdate calendar="gregorian" normal="1959/1967" era="ce">1959-1967</unitdate>
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                          <did>
                            <unitid identifier="63906585">2316</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(39)</unitid>
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                            <unittitle>Verlaging van de grondwaterstand ten behoeve van de kelderbouw voor de Nederlandse Bank,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906588">2301</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(26)</unitid>
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                            <unittitle>Beheersing van de grondwaterstand in de wijk Maten,<unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
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                          <did>
                            <unitid identifier="63906589">2302</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(27)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5879-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grondwaterstand ten behoeve van de bouw van galerijflats in het uitbreidingsplan Zevenhuizen,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                        <did>
                          <unitid identifier="63906590">2303</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(28)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-587a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Delden, verlaging van de grondwaterstand als gevolg van de nieuw te maken omlegging van de Rijksweg E8.</unittitle>
                          <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>842, 2304</unitid>
                          <unittitle>Dieren.</unittitle>
                          <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                          <did>
                            <unitid identifier="63906592">842</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/296(530)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-587c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het te verwachten waterbezwaar in de bouwput voor een schutsluis,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                          <did>
                            <unitid identifier="63906593">2304</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(29)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-587d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwacht waterbezwaar in de bouwput voor een nieuwe schutsluis in het Apeldoornsch Kanaal,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        <did>
                          <unitid identifier="63906594">3054</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(30)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-587e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Doesburg, kwelverlies in de gekanaliseerde Oude IJssel tussen Doesburg en Laag Keppel.</unittitle>
                          <unitdate calendar="gregorian" normal="1946/1947" era="ce">1946-1947</unitdate>
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                        <did>
                          <unitid identifier="63906595">2305</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(31)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-587f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Elst, mogelijke schade aan de landbouw door verlaging van de grondwaterstand.</unittitle>
                          <unitdate calendar="gregorian" normal="1951/1953" era="ce">1951-1953</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906597">1655</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1978-027(1282)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5880-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Goorstraat, berekeningen van de gevolgen van de bouwputbemaling ten behoeve van de aanleg van de tunnel onder Rijksweg 15 (nabij Doetinchem).</unittitle>
                          <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                        <did>
                          <unitid>840, 974</unitid>
                          <unittitle>Harderwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1952/1953" era="ce">1952-1953</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906599">974</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/133(505)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5882-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput voor een schutsluis,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                          <did>
                            <unitid identifier="63906600">840</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/133(529)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5883-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput voor een gemaal van de polder Flevoland-Oost,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906601">1168</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/402(803)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5884-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nijkerk, onderzoek naar het te verwachten waterbezwaar in de bouwputten voor een schut- en een spuisluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2306-2307</unitid>
                          <unittitle>Nijmegen.</unittitle>
                          <unitdate calendar="gregorian" normal="1931/1972" era="ce">1931-1972</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906603">2306</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(32)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5886-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw van de Waalbrug,<unitdate calendar="gregorian" normal="1931/1932" era="ce">1931-1932</unitdate>
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                          <did>
                            <unitid identifier="63906604">2307</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(33)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5887-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Drainage ten behoeve van de stadsuitbreiding in de Ooijpolder,<unitdate calendar="gregorian" normal="1965/1972" era="ce">1965-1972</unitdate>
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                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2308-2309</unitid>
                          <unittitle>Tiel, bemaling van de bouwput ten behoeve van de nieuwe sluis in het Amsterdam-Rijnkanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1969" era="ce">1938-1969</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906606">2309</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(35)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5889-79fa-e053-09f0900a5ea8</unitid>
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                              <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906607">2308</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(34)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-588a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Wageningen.</unittitle>
                          <unitdate calendar="gregorian" normal="1960/1963" era="ce">1960-1963</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906609">1116</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/386(736)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-588c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Kwelonderzoek Uiterwaardenplan in het kader van een stadsuitbreidingsplan,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906610">2312</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(37)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-588d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwachte kwel in de proefbemaling ten behoeve van het te bouwen Rijkslyceum,<unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906611">2310</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(36)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-588e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwachte kwel in het uitbreidingsgebied van het Uiterwaardenplan,<unitdate calendar="gregorian" normal="1961/1962" era="ce">1961-1962</unitdate>
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                          </did>
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                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.3.06</unitid>
                        <unittitle>Utrecht</unittitle>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906614">1628</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/514(1251)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5890-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport houdende een advies inzake het functioneren van de retourbemaling ten behoeve van de uitbreiding van de rioolwaterzuiveringsinstallatie.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906616">1074</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/358(700)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5891-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amerongen, verwachte waterbezwaar in de bouwputten voor het stuwcomplex in de Nederrijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906617">2323</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(42)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5892-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bilt, De; bronbemaling van de bouwput voor de tunnel in Rijksweg 25.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1971" era="ce">1963-1971</unitdate>
                          <physdesc>
                            <extent>pak</extent>
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                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906618">2774</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5893-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Broekzijdsche Polder, geohydrologisch advies in verband met de polderpeilverlaging ten behoeve van het uitbreidingsplan Noord van Abcoude.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906619">2329</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(47)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5894-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Den Hommel; bronbemaling uitbreiding zwembad.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1964" era="ce">1963-1964</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906620">927</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/310(575)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5895-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hagestein, onderzoek naar het te verwachten waterbezwaar in de bouwput voor het stuwcomplex.</unittitle>
                          <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906621">2325</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(43)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5896-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Jutphaas, bemaling van de bouwput voor het gemaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906622">2335</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(51)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5897-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lage Weide, divers onderzoek met betrekking tot de aanleg Rijksweg 2.</unittitle>
                          <unitdate calendar="gregorian" normal="1940/1941" era="ce">1940-1941</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906623">2326</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(44)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5898-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oudenrijn, bemaling ingraving kruising Oudenrijn met Rijksweg 12.</unittitle>
                          <unitdate calendar="gregorian" normal="1959/1960" era="ce">1959-1960</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906624">2339</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(54)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5899-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rijnsweerd, bemaling bouwput onderdoorgang Rijksweg 28.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906625">2330</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(48)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-589a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vleuten, onderzoek bij de aanleg van Rijksweg 2 Amsterdam-Utrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906626">2321</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(8)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-589b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vuursche Dreef, De; gevolgen voor de waterbeheersing bij bodemverlaging.</unittitle>
                          <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906627">2331</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(49)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-589c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wijk bij Duurstede, bemaling bouwput en verwachte verlaging grondwaterstand door bouw tweede sluis Amsterdam-Rijnkanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                        <did>
                          <unitid identifier="63906630">2333</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(56)</unitid>
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                          <unittitle>Amsterdam-Rijnkanaal, voorbereiding van de vaarweg Amsterdam-Rijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1929/1938" era="ce">1929-1938</unitdate>
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                            <extent>pak</extent>
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                          <did>
                            <unitid identifier="63906632">2375</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(79)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwachte gevolgen van zandwinning in de Nieuwe Meer,<unitdate calendar="gregorian" normal="1949/1966" era="ce">1949-1966</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906633">2358</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(62)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Pompproeven ten behoeve van de IJ-tunnel,<unitdate calendar="gregorian" normal="1955/1958" era="ce">1955-1958</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906634">984</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/329(617)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput van de Hemtunnel voor spoorwegverkeer,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906635">1077</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/329(703)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Coentunnel, bemaling ten behoeve van de aanleg van bouwputten,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                        <did>
                          <unitid>2355-2357</unitid>
                          <unittitle>Amstelveen.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1972" era="ce">1963-1972</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906637">2355</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(59)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bronbemaling van de bouwput voor de bouw van De Bijenkorf,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                          </did>
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                          <did>
                            <unitid identifier="63906638">2356</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(60)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Spanningsbemaling van een bouwput voor de bouw van een torenflat aan de Rembrandtweg,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906639">2357</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(61)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling van de bouwput voor de bouw van het computercentrum Algemene Bank Nederland,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906640">2362</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(66)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Edam, onderzoek naar de bodemgesteldheid in verband met de zandwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906641">1526</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/476(1006)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58a9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Enkhuizen, onderzoek naar het te verwachten waterbezwaar van de bouwput voor een sluizencomplex.</unittitle>
                          <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                          <unittitle>Geestmerambacht.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1967" era="ce">1963-1967</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906643">2421</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(95)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ab-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Beoordeling van zandwinning in de polder ten behoeve van wegenbouw,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                          <did>
                            <unitid identifier="63906644">2427</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(97)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ac-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gevolgen van de zandwinning in het oosten van de polder,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906646">2425</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(96)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ad-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling van de bouwput voor de bouw van een gemaal,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Haarlemmermeerpolder; bouw van een tunnel in Rijksweg 4A onder de Ringvaart.</unittitle>
                          <unitdate calendar="gregorian" normal="1940/1964" era="ce">1940-1964</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906649">2430</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(98)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58af-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling,<unitdate calendar="gregorian" normal="1940/1955" era="ce">1940-1955</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906650">1029</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/343(651)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906651">2432</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(99)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Schipholweg; bodemonderzoek,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                            </unittitle>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906652">2434</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(100)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gevolgen van zandwinning tussen de Spieringweg en de IJ-tocht, ten zuiden van Vijfhuizen,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Den Helder.</unittitle>
                          <unitdate calendar="gregorian" normal="1949/1968" era="ce">1949-1968</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906654">2360</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(64)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling van de bouwputten voor de uitbreiding van de Marinehaven,<unitdate calendar="gregorian" normal="1949/1956" era="ce">1949-1956</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906655">854</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/293(535)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verslag inzake een onderzoek naar het verwachte waterbezwaar in de bouwput voor een ontworpen dok voor de marinebasis,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906656">2361</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(65)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling van de bouwput voor de bouw van een warenhuis van Vroom en Dreesmann,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906657">1465</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/463(970)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar van de bouwput voor een nieuw gemaal tussen het Noordhollands Kanaal en het Nieuwe Diep,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                            </unittitle>
                          </did>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906658">2365</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(69)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hembrug, bemaling van de bouwputten voor de bouw van de Hem- en Coentunnels onder het Noordzeekanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906659">1140</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/150(771)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58b9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hilversum, onderzoek naar het te verwachten waterbezwaar bij de bouw van een wegonderdoorgang.</unittitle>
                          <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>IJmuiden.</unittitle>
                          <unitdate calendar="gregorian" normal="1920/1976" era="ce">1920-1976</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2366-2369, 2396</unitid>
                            <unittitle>Bronbemaling voor de bouw van een schutsluis.<unitdate calendar="gregorian" normal="1920/1955" era="ce">1920-1955</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63906662">2366</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(70)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58bc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1920/1923" era="ce">1920-1923</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906663">2367</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(71)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58bd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906664">2368</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(72)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58be-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1925" era="ce">1925</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906666">2369</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(73)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58bf-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1926/1931" era="ce">1926-1931</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63906667">2396</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(89)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Velsen, invloed van bemaling van de bouwput op de waterwinning,<unitdate calendar="gregorian" normal="1942/1955" era="ce">1942-1955</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906668">551</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/129(79)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nader onderzoek van de mogelijkheid om de nieuwe schutsluis in den droge te bouwen,<unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906669">2370</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(74)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gevolgen van zandwinning in de buitenhaven,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906670">2371</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(75)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gevolgen van de aanleg van een bufferput in de buitenhaven,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906671">2372</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(76)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling van de bouwput voor een gemaal,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </unittitle>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906672">1596</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-015(1220)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de gevolgen van de aanleg van een voorhaven voor het grondwaterregiem,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                          </did>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906673">2373</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(77)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kolhorn, bouw van een schutsluis en grondduikers op diverse locaties in de Westfriesche kanalen.</unittitle>
                          <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906674">2354</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(78)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nederhorst Den Berg, bronbemaling van de sluisbouw in het Hilversumsch Kanaal bij boerderij 't Hemeltje.</unittitle>
                          <unitdate calendar="gregorian" normal="1930/1931" era="ce">1930-1931</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Schiphol.</unittitle>
                          <unitdate calendar="gregorian" normal="1962/1971" era="ce">1962-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906676">2383</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(83)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58c9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling van de bouwputten voor een tunnel in de omlegging van Rijksweg 4 bij de luchthaven,<unitdate calendar="gregorian" normal="1962/1964" era="ce">1962-1964</unitdate>
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                          <did>
                            <unitid identifier="63906677">2386</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(84)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ca-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bronbemaling van de bouwput voor het nieuwe stationsgebouw van de luchthaven,<unitdate calendar="gregorian" normal="1962/1971" era="ce">1962-1971</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906678">2388</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(85)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58cb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Drainage van de spoorwegtunnel op het terrein van de luchthaven,<unitdate calendar="gregorian" normal="1964/1970" era="ce">1964-1970</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906679">2390</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(86)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58cc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling ten behoeve van de bouw van een brug over de Ringvaart,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                      </c>
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                        <did>
                          <unitid identifier="63906680">2446</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(103)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58cd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Twiskepolder, verhoging van de grondwaterstand als gevolg van zandwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1972" era="ce">1963-1972</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906682">2953</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Velsen, spoorwegtunnelproject ten westen van de spoorbrug.</unittitle>
                          <unitdate calendar="gregorian" normal="1947/1949" era="ce">1947-1949</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906684">2337</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(58)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58cf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Westereinderplas, verwachte gevolgen van zandwinning voor het boezem- en polderwater van Rijnland en Amstelland.</unittitle>
                          <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                        <did>
                          <unitid>2324, 2400</unitid>
                          <unittitle>Zaandam.</unittitle>
                          <unitdate calendar="gregorian" normal="1955/1964" era="ce">1955-1964</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906687">2400</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(90)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwachte gevolgen van zandwinning in de polders De Kuil en De Pol aan de Zaan,<unitdate calendar="gregorian" normal="1955/1963" era="ce">1955-1963</unitdate>
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                          <did>
                            <unitid identifier="63906689">2324</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(55)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verlaging van de grondwaterstand door bronbemaling voor de Coentunnel,<unitdate calendar="gregorian" normal="1957/1964" era="ce">1957-1964</unitdate>
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                      </c>
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                        <did>
                          <unitid identifier="63906690">2405</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(91)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zaandijk, gevolgen van polderpeilverlaging in het Guisveld in de polder Westzaan.</unittitle>
                          <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906691">2408</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(92)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zijpe, gevolgen van de klei-afgraving ten behoeve van verhoging van de Hondsbossche Zeewering.</unittitle>
                          <unitdate calendar="gregorian" normal="1968/1970" era="ce">1968-1970</unitdate>
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                    </c>
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                      <did>
                        <unitid type="series_code">1.3.08</unitid>
                        <unittitle>Zuid-Holland</unittitle>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906693">2422</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(147)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Alblasserwaard, nader onderzoek grondwaterstanden.</unittitle>
                          <unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
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                        <did>
                          <unitid>995, 2340</unitid>
                          <unittitle>Botlek.</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906695">2340</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(104)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Fundering vaste dokken Verolme op Rozenburg,<unitdate calendar="gregorian" normal="1955/1969" era="ce">1955-1969</unitdate>
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                          <did>
                            <unitid identifier="63906696">995</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/340(626)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58d9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar van de bouwput ten behoeve van de bouw van vaste dokken,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                        <did>
                          <unitid identifier="63906697">2431</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(153)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58da-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Brielse Gat, wateronderzoek.</unittitle>
                          <unitdate calendar="gregorian" normal="1968/1972" era="ce">1968-1972</unitdate>
                          <physdesc>
                            <extent>pak</extent>
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                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906698">2343</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(107)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58db-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Delft, spoorwegonderdoorgang.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906699">2344</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(108)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58dc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dordrecht, bemaling bouw verkeerstunnel te Dordrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906700">2423</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(148)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58dd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Goeree-Overflakkee, uitwerken twee pompproeven geohydrologisch onderzoek.</unittitle>
                          <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906701">2345</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(109)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58de-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gouda, oorzaken wateroverlast uitbreiding St. Jozefpaviljoen.</unittitle>
                          <unitdate calendar="gregorian" normal="1957/1960" era="ce">1957-1960</unitdate>
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                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2346-2348</unitid>
                          <unittitle>'s-Gravenhage.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1972" era="ce">1963-1972</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906703">2346</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(110)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Proefbemaling saneringsplan Schedeldoekhaven-Spuikwartier,<unitdate calendar="gregorian" normal="1963/1972" era="ce">1963-1972</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906704">2347</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(111)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderdoorgang Rijksweg 's-Gravenhage - Utrecht,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906705">2348</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(112)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemalingen baan I en II Utrechtse Baan,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906706">2349</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(113)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hagestein, gevolgen verlaging grondwaterstand door bouw stuw en sluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1953/1962" era="ce">1953-1962</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906707">2428</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(151)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haringvliet, bemaling bouwput in verband met afdamming.</unittitle>
                          <unitdate calendar="gregorian" normal="1955/1972" era="ce">1955-1972</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906708">2351</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(115)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Heinenoord, bouw tunnel Rijksweg 19.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1966" era="ce">1965-1966</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906710">2352</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(116)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Herkingen, invloed grondwaterbeweging op waterdrukken in nieuwe dijk bekleed met asfalt.</unittitle>
                          <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906711">2353</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(117)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hillegom, bepaling kwel uitslagwater gemaal Haarlemmermeerpolder.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1966" era="ce">1965-1966</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906712">2374</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(118)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hoek van Holland, geohydrologisch onderzoek havenaanleg.</unittitle>
                          <unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906713">1535</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1974-015(1160)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58e9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kiltunnel, advies inzake de bemaling van het bouwdok bij de voorgenomen bouw en de te verwachten invloed op de grondwaterstanden.</unittitle>
                          <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906714">2376</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(119)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ea-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Krimpen aan de IJssel, stormvloedkering.</unittitle>
                          <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906715">2378</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(120)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58eb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leiden, bemaling kruising Provinciale weg 16 met Rijksweg 17.</unittitle>
                          <unitdate calendar="gregorian" normal="1967/1970" era="ce">1967-1970</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906716">2380</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(121)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ec-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lisse, bemaling bouw rioolwaterzuiveringsinstallatie.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906717">370</unitid>
                          <unitid audience="internal" type="obsolete">B1,15-72/38</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ed-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nieuwpoort, gemeente; het verstrekken van advies aan de minister van Arbeid, Handel en Nijverheid inzake de aanleg van waterleiding.</unittitle>
                          <unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906719">2382</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(122)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ee-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noordwijk, bronbemaling PTT-gebouw.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906720">2385</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(124)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58ef-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Numansdorp, bemaling bouwdok tien doorlaatcaissons aan Hellegat Strekdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906721">2389</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(126)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58f0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rotterdam; bouw Koninginnebrug, Parksluizen, Maastunnel en huisvesting Gemeentelijk Energiebedrijf.</unittitle>
                          <unitdate calendar="gregorian" normal="1928/1940" era="ce">1928-1940</unitdate>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2392, 2424</unitid>
                          <unittitle>Rozenburg.</unittitle>
                          <unitdate calendar="gregorian" normal="1949/1968" era="ce">1949-1968</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906723">2424</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(149)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58f2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vijf-eilandenplan, bouw spuisluis in schutkolk oude schutsluis Rozenburg,<unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906724">2392</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(127)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58f3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling bouwput sluis,<unitdate calendar="gregorian" normal="1966/1968" era="ce">1966-1968</unitdate>
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                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2393, 2395</unitid>
                          <unittitle>Schiedam.</unittitle>
                          <unitdate calendar="gregorian" normal="1959/1962" era="ce">1959-1962</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906726">2393</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(128)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58f5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Uitbreiding haven Wilton-Feyenoord aan Nieuwe Maas,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906727">2395</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(129)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-58f6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw dok Wilton-Feyenoord,<unitdate calendar="gregorian" normal="1961/1962" era="ce">1961-1962</unitdate>
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                          <unittitle>Sophiapolder, bemaling bouwdok caissons Noord-Bevelandse oever.</unittitle>
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                            <unitid identifier="63906730">2397</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(130)</unitid>
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                            <unittitle>Te verwachten waterbezwaar bouwput schutsluis in inlaatsluis dam Hartelse Gat,<unitdate calendar="gregorian" normal="1947/1948" era="ce">1947-1948</unitdate>
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                            <unitid identifier="63906731">855</unitid>
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                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput voor de toekomstige schutsluis in het Hartelsche Gat,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                          <did>
                            <unitid identifier="63906732">2398</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(131)</unitid>
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                            <unittitle>Bemaling bouwput inlaatsluis Hartelse Gat,<unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                          <did>
                            <unitid identifier="63906734">2399</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(132)</unitid>
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                            <unittitle>Bouwput Nieuwe Hartelsluis,<unitdate calendar="gregorian" normal="1962/1973" era="ce">1962-1973</unitdate>
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                        <did>
                          <unitid identifier="63906735">2420</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(146)</unitid>
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                          <unittitle>Veender- en Lijkerpolder, ontgronding in verband met aanleg vuilstortplaats gemeente Alkemade.</unittitle>
                          <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                        <did>
                          <unitid identifier="63906736">2401</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(133)</unitid>
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                          <unittitle>Voorburg, maken landhoofden Geestbrug.</unittitle>
                          <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
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                        <did>
                          <unitid identifier="63906737">2426</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(150)</unitid>
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                          <unittitle>Voorne, bemaling bouwput Voornse sluis en grondwaterstandsdalingen in omgeving.</unittitle>
                          <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                        <did>
                          <unitid identifier="63906738">1634</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/506(1258)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5900-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorschoten, gemeente; advies betreffende het te verwachten kwel- en zoutbezwaar bij aanleg ingraving van Rijksweg 11(gedeelte vanaf de spoorbaan 's-Gravenhage - Leiden tot de Vliet).</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                        <did>
                          <unitid identifier="63906739">2403</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(135)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5901-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Waddinxveen, bemaling bouwputten Gouwetunnel.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906740">2429</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(152)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5902-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zandkreek, bemaling bouwput Zandkreeksluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1957/1958" era="ce">1957-1958</unitdate>
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                        <did>
                          <unitid identifier="63906741">2409</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(138)</unitid>
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                          <unittitle>Zandvoort, aanleg bezinkingsvijvers voor rioolwaterzuivering.</unittitle>
                          <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                          <did>
                            <unitid identifier="63906744">2413</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(142)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5905-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Spanningsbemaling spoorwegonderdoorgang op de lijn Rotterdam - Dordrecht,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                          <did>
                            <unitid identifier="63906746">1266</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/452(924)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5906-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar van de bouwput voor de onderdoorgang Oudelandslaan,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                          </did>
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                      </c>
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                        <unitid type="series_code">1.3.09</unitid>
                        <unittitle>Zeeland</unittitle>
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                          <unitdate calendar="gregorian" normal="1967/1974" era="ce">1967-1974</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906749">2438</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(156)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5909-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Proefbemaling bouwdok doorlaatcaissons,<unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906750">1474</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/465(976)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-590a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het waterbezwaar van het bouwdok voor doorlaatcaissons nabij de polder Nieuw Bommenede,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                          <did>
                            <unitid identifier="63906751">1537</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1974-001(1162)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-590b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar van de bouwput voor de bouw van een in- en uitlaatsluis in de Brouwersdam,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906752">1609</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/368(1227)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-590c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bruinisse, onderzoeken naar het waterbezwaar in de bouwput voor de schutsluis in de Grevelingendam en naar de grondwaterstandsverlagingen in het dorp Bruinisse ten gevolge van de bemaling van de bouwput.</unittitle>
                          <unitdate calendar="gregorian" normal="1960/1976" era="ce">1960-1976</unitdate>
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                        <did>
                          <unitid identifier="63906753">150</unitid>
                          <unitid audience="internal" type="obsolete">74-83/175</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-590d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hansweert, gemeente; uitvoeren van een aantal boringen met bijbehorende werkzaamheden en het houden van een pomp- en een retourproef ten behoeve van de bouw van een sluizencomplex.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906754">2433</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(154)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-590e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kreekrakdam, bemaling bouwput sluizen spoorweg en verkeersweg.</unittitle>
                          <unitdate calendar="gregorian" normal="1967/1970" era="ce">1967-1970</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906756">1538</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1974-002(1163)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-590f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kreekrak, advies met betrekking tot de te installeren bemaling van de bouwput voor het gemaal en de invloed daarvan op de grondwaterstanden in de naaste omgeving.</unittitle>
                          <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                          <unitdate calendar="gregorian" normal="1970/1976" era="ce">1970-1976</unitdate>
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                          <did>
                            <unitid identifier="63906759">2458</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(174)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5911-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Noordelijke Sluisgaten,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906761">1486</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1973-013(1127)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5912-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar van de bouwput voor de bouw van een uit- en inlaatsluis op het werkeiland Noordland,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                          <did>
                            <unitid identifier="63906762">220</unitid>
                            <unitid audience="internal" type="obsolete">74-83/157</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5913-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Adviezen over de bemaling van bouwputten ten behoeve van de bouw van caissons,<unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906764">2454</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(172)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5914-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schouwen-West, verbetering waterhuishouding.</unittitle>
                          <unitdate calendar="gregorian" normal="1953/1959" era="ce">1953-1959</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906766">2436</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(155)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5915-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sloe, Het; snelheid ontwatering op te spuiten industrieterrein Oostelijk Sloegebied.</unittitle>
                          <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                        <did>
                          <unitid identifier="63906767">2439</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(157)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5916-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sluiskil, bouw kelders nieuwe vleugel ziekenhuis.</unittitle>
                          <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                          <unitdate calendar="gregorian" normal="1958/1967" era="ce">1958-1967</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906769">2440</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(158)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5918-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling bouwputten uitwateringssluis en wachtsluis,<unitdate calendar="gregorian" normal="1958/1960" era="ce">1958-1960</unitdate>
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                          </did>
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                          <did>
                            <unitid identifier="63906770">2441</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(159)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5919-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zeevaart- en binnenvaartsluizen,<unitdate calendar="gregorian" normal="1959/1963" era="ce">1959-1963</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906771">3198</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(160)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-591a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Wateronderzoek noordzijde,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                          <did>
                            <unitid identifier="63906772">2442</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(161)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-591b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Sonderingen en steekboringen binnenvaartsluis,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906773">2443</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(162)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-591c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Boor- en sondeergegevens buitenhavens,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1085-1086, 2452</unitid>
                          <unittitle>Veere, afsluiting Veerse Gat.</unittitle>
                          <unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906775">2452</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(170)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-591e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bronbemaling bouwput in de Oosternieuwlandpolder,<unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906776">1086</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/1959-025(715)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-591f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Modelonderzoek van de beweging van het grondwater in een dijkslichaam onder invloed van de fluctuaties van het buitenwater en resultaten van een modelproef,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          </did>
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                          <did>
                            <unitid identifier="63906777">1085</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/365(714)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5920-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verwachte waterbezwaar in de bouwput voor het vervaardigen van de benodigde caissons,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                            </unittitle>
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                        <did>
                          <unitid identifier="63906778">2453</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(171)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5921-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vierbannen, doorlatendheid van de bodem.</unittitle>
                          <unitdate calendar="gregorian" normal="1959/1961" era="ce">1959-1961</unitdate>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906779">2444</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(163)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5922-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vlake, Wateronttrekkingscommissie tunnelbouw.</unittitle>
                          <unitdate calendar="gregorian" normal="1938/1971" era="ce">1938-1971</unitdate>
                        </did>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2445, 2447-2451</unitid>
                          <unittitle>Vlissingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1926/1971" era="ce">1926-1971</unitdate>
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                          <did>
                            <unitid identifier="63906781">2445</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(164)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5924-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw keersluis,<unitdate calendar="gregorian" normal="1926/1927" era="ce">1926-1927</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906782">2447</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(165)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5925-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grondonderzoek bouw droogdok Scheepsbouwmaatschappij De Schelde,<unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906783">2448</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(166)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5926-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het te verwachten waterbezwaar en veiligstellen kistdam bij tijdelijke drooglegging havenbassin,<unitdate calendar="gregorian" normal="1947/1948" era="ce">1947-1948</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906784">2449</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(167)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5927-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling te vernieuwen sluiscomplex,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906785">2451</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(169)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5928-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>De te verwachten kwel door bemaling sloten en aanwezigheid drains op terrein Total,<unitdate calendar="gregorian" normal="1951/1971" era="ce">1951-1971</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906786">2450</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(168)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5929-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Herstel kademuur Buitenhaven,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906787">999</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/327(630)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-592a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wemeldinge, onderzoek naar het te verwachten waterbezwaar van de bouwput voor het herstel van de Middensluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2460-2461</unitid>
                          <unittitle>Westerschelde.</unittitle>
                          <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906790">2460</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(175)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-592c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw tunnel Hansweert,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906792">2461</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(176)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-592d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Geologisch advies tunnelbouw,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </unittitle>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906793">2455</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(173)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-592e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuid-Beveland, mogelijkheid tot onttrekking bevloeiingswater voor Kraayertspolder uit dunne zoetwaterlaag.</unittitle>
                          <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.3.10</unitid>
                        <unittitle>Noord-Brabant</unittitle>
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                      <c level="file">
                        <did>
                          <unitid identifier="63906795">2471</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(178)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5930-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Aalst, bemaling bouwput rioolsegment Gestelsestraat.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906796">2407</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(179)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5931-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Breda, twee onderdoorgangen tunnel Oranjeplein.</unittitle>
                          <unitdate calendar="gregorian" normal="1956/1963" era="ce">1956-1963</unitdate>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906797">2502</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(180)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5932-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dintelsas, bronbemaling sluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1961/1962" era="ce">1961-1962</unitdate>
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                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1090, 2503-2505</unitid>
                          <unittitle>Eindhoven.</unittitle>
                          <unitdate calendar="gregorian" normal="1944/1961" era="ce">1944-1961</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906799">2503</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(181)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5934-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verkeerstunnel Demer-Fellenoord,<unitdate calendar="gregorian" normal="1944/1946" era="ce">1944-1946</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906800">2504</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(182)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5935-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bouw spoorwegonderdoorgang weg Eindhoven-Helmond,<unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906801">1090</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/370(719)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5936-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in een tweetal bouwputten ten behoeve van de bouw van een installatie voor de zuivering van rioolwater op de gemeentelijke vuilstortplaats aan de Dommel te Eindhoven,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906802">2505</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(183)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5937-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Te verwachten waterbezwaar twee bouwputten bouw installatie zuivering rioolwater vuilstortplaats aan Dommel,<unitdate calendar="gregorian" normal="1959/1961" era="ce">1959-1961</unitdate>
                            </unittitle>
                          </did>
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                      </c>
                      <c level="file">
                        <did>
                          <unitid>2505A</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(184)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/d2944109-2bfb-9283-e053-6df0900aec3e</unitid>
                          <unittitle>Grave, bouw schutsluis Maas.</unittitle>
                          <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906804">1125</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/355(746)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5939-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haringvliet, onderzoek naar het te verwachten waterbezwaar in de bouwput voor de schutsluis in de afsluitdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1356, 2507-2508</unitid>
                          <unittitle>'s-Hertogenbosch.</unittitle>
                          <unitdate calendar="gregorian" normal="1957/1970" era="ce">1957-1970</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906806">2507</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(185)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-593b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verlaging grondwaterstand bouwput provinciehuis,<unitdate calendar="gregorian" normal="1957/1966" era="ce">1957-1966</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906807">2508</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(186)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-593c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grondonderzoek, pompproef en bronbemaling rioolwaterzuiveringsinstallatie,<unitdate calendar="gregorian" normal="1967/1970" era="ce">1967-1970</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906808">1356</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/483(1046)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-593d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar van de onderdoorgangen met betrekking tot de bouw van de rondweg ten noorden van 's-Hertogenbosch,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906809">2509</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(187)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-593e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hooge en Lage Zwaluwe, bemaling bouwput uitwateringssluis Hamsche Polders.</unittitle>
                          <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906810">2469</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(177)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-593f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Mark-Vlietkanaal; invloed aangrenzende gronden bij aanleg Mark-Vlietkanaal, verbetering aansluitende deel Roosendaalse Vliet.</unittitle>
                          <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906811">199</unitid>
                          <unitid audience="internal" type="obsolete">74-83/136</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5940-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noord-Brabant, verstrekken van hydrologisch advies aan de Directie van de Rijkswaterstaat over de maatregelen die noodzakelijk zijn ter bescherming van de waterwingebieden bij de aanleg van de Rijkswegen 73 en 77.</unittitle>
                          <unitdate calendar="gregorian" normal="1975/1979" era="ce">1975-1979</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2510, 2512</unitid>
                          <unittitle>Oosterhout.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1968" era="ce">1963-1968</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906814">2510</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(188)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5942-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oorzaken verzakkingen van en achter sluis I Wilhelminakanaal,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906815">2512</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(189)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5943-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling bouwput Marksluis,<unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906816">2513</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(190)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5944-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Orthen, bouw spoorwegonderdoorgang.</unittitle>
                          <unitdate calendar="gregorian" normal="1937/1943" era="ce">1937-1943</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Roosendaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1956/1971" era="ce">1956-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906818">2514</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(191)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5946-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Aanleg spoorwegondergang Badhuisstraat,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906819">1000</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/336(631)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5947-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in een spoorwegonderdoorgang aan de Badhuisstraat te Roosendaal.,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906820">2517</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(192)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5948-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling sleuf voor aanleg persleiding tracé Roosendaal-Moerdijk van afvalwaterleiding Westelijk Noord-Brabant,<unitdate calendar="gregorian" normal="1968/1971" era="ce">1968-1971</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906821">2518</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(193)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5949-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sambeek, bemaling bouwputten stuwcomplex.</unittitle>
                          <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906822">1124</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/380(756)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-594a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Theodoruspolder, onderzoek naar het te verwachten waterbezwaar in een bouwput ten behoeve van een schutsluis nabij Bergen op Zoom.</unittitle>
                          <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Ulvenhout, Rijksweg 58.</unittitle>
                          <unitdate calendar="gregorian" normal="1976/1982" era="ce">1976-1982</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63906824">1611</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-007(1229)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-594c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemalingsadvies betreffende de aanleg van een ingraving tussen Bavel en Rijksweg 16,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906825">1660</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/544(1289)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-594d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Drainproeven ten behoeve van de bemaling van een verdiept aan te leggen gedeelte,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63906826">1337</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1982-001(1390)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-594e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Tijdelijke ontwatering van de ingraving ten behoeve van de aanleg van een vliesconstructie,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63906827">2520</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(195)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-594f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vught, omlegging Rijkswegen nr. 64 en 65.</unittitle>
                          <unitdate calendar="gregorian" normal="1957/1959" era="ce">1957-1959</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1121, 2521</unitid>
                          <unittitle>Waalwijk.</unittitle>
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                            <unittitle>Bemaling bouwput schutsluis Zuiderkanaal,<unitdate calendar="gregorian" normal="1958/1959" era="ce">1958-1959</unitdate>
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                            <unitid audience="internal" type="obsolete">R09-80/378(755)</unitid>
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                        <did>
                          <unitid identifier="63906831">2522</unitid>
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                          <unittitle>Werkendam, te verwachten waterbezwaar bemaling bouwput schutsluis.</unittitle>
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                        <did>
                          <unitid identifier="63906832">1089</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/369(718)</unitid>
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                          <unittitle>Willemstad, verwachte waterbezwaar in de bouwputten ten behoeve van de bouw van twee schutsluizen in de afsluitdam van het Volkerak.</unittitle>
                          <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          <did>
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                            <unitid audience="internal" type="obsolete">R09-80/219(666)</unitid>
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                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput nabij sluis III,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                          <did>
                            <unitid identifier="63906838">1581</unitid>
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                            <unittitle>Onderzoek naar de hydrologische gevolgen van de bronbemaling ten behoeve van de bouw van de tweelingsluis op de grondwaterstand ter hoogte van Obbicht (Limburg),<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                        <c level="file">
                          <did>
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                            <unitid audience="internal" type="obsolete">D19-73(201)</unitid>
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                            <unittitle>Aanleg van de Keulseweg,<unitdate calendar="gregorian" normal="1963/1965" era="ce">1963-1965</unitdate>
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                          <did>
                            <unitid identifier="63906841">2463</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(202)</unitid>
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                            <unittitle>Bemaling van de bouwput ten behoeve van kelders voor het Protestants Ziekenhuis,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                      </c>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906843">2457</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(199)</unitid>
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                            <unittitle>Grondwaterstanden in de kanaalverbredingen,<unitdate calendar="gregorian" normal="1942/1943" era="ce">1942-1943</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906844">2459</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(200)</unitid>
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                            <unittitle>Bemaling van de bouwputten voor de sluizen te Born,<unitdate calendar="gregorian" normal="1943/1946" era="ce">1943-1946</unitdate>
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                            <physdesc>
                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906845">1094</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/364(724)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-595f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar het te verwachten waterbezwaar in de bouwput nabij Maasbracht te ontwerpen Drielingsluis<lb></lb>,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                        <did>
                          <unitid identifier="63906847">2464</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(203)</unitid>
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                          <unittitle>Linne, verwachte waterbezwaar en inrichting van de bemalingsinstallatie voor de bouwput van een waterkrachtcentrale in de Maas.</unittitle>
                          <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                        <did>
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                          <unittitle>Maastricht.</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906850">2466</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(205)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5962-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bemaling ten behoeve van de bouw van een spoorwegonderdoorgang aan de Scharnerweg,<unitdate calendar="gregorian" normal="1957/1958" era="ce">1957-1958</unitdate>
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                          <did>
                            <unitid identifier="63906852">2467</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(206)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5963-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Waterdichtheid van de Beatrixhaven,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                        <did>
                          <unitid identifier="63906853">2465</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(204)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5964-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maasbracht, verwachte waterbezwaar in de bouwput van een drielingsluis in het Julianakanaal.</unittitle>
                          <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                        <did>
                          <unitid identifier="63906854">2456</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(198)</unitid>
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                          <unittitle>Margraten, massief gevolgen van de centrale mergelwinning.</unittitle>
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                        <did>
                          <unitid identifier="63906855">2470</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(208)</unitid>
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                          <unittitle>Urmond, bemaling van een door bedijking van de Maas te maken polder.</unittitle>
                          <unitdate calendar="gregorian" normal="1948/1950" era="ce">1948-1950</unitdate>
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                        <did>
                          <unitid identifier="63906856">2472</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(209)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5967-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Valkenburg, drainage van de trog voor de Provinciale weg 4.</unittitle>
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                        <did>
                          <unitid identifier="63906857">1765</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/557(1355)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5968-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuid-Willemsvaart, proefbemaling ten behoeve van de bouw van sluis.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                              <unitid identifier="63906861">2473</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(210)</unitid>
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                              <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1931/1941" era="ce">1931-1941</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                            <did>
                              <unitid identifier="63906862">2474</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(211)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-596d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Wieringermeer,<unitdate calendar="gregorian" normal="1931/1946" era="ce">1931-1946</unitdate>
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                              <unittitle>Dagrapporten van boringen.<unitdate calendar="gregorian" normal="1934/1958" era="ce">1934-1958</unitdate>
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                                  <unitdate calendar="gregorian" normal="1934/1936" era="ce">1934-1936</unitdate>
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                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
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                              <did>
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                                <unitid audience="internal" type="obsolete">D19-73(212)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5972-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1944/1947" era="ce">1944-1947</unitdate>
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                              <did>
                                <unitid identifier="63906869">2477</unitid>
                                <unitid audience="internal" type="obsolete">D19-73(212)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5973-79fa-e053-09f0900a5ea8</unitid>
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                                  <unitdate calendar="gregorian" normal="1951/1958" era="ce">1951-1958</unitdate>
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                              <unittitle>Gevolgen van de droogmaking.<unitdate calendar="gregorian" normal="1956/1962" era="ce">1956-1962</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63906871">2483</unitid>
                                <unitid audience="internal" type="obsolete">D19-73(215)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5975-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1956/1958" era="ce">1956-1958</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63906872">2484</unitid>
                                <unitid audience="internal" type="obsolete">D19-73(215)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5976-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1959/1962" era="ce">1959-1962</unitdate>
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                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2485, 2488-2489</unitid>
                              <unittitle>Wateranalyses.<unitdate calendar="gregorian" normal="1963/1973" era="ce">1963-1973</unitdate>
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                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63906874">2485</unitid>
                                <unitid audience="internal" type="obsolete">D19-73(216)</unitid>
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                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1963/1966" era="ce">1963-1966</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63906875">2488</unitid>
                                <unitid audience="internal" type="obsolete">D19-73(218)</unitid>
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                                  <unitdate calendar="gregorian" normal="1967/1969" era="ce">1967-1969</unitdate>
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                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63906876">2489</unitid>
                                <unitid audience="internal" type="obsolete">D19-73(218)</unitid>
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                                  <unitdate calendar="gregorian" normal="1970/1973" era="ce">1970-1973</unitdate>
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                            <did>
                              <unitid identifier="63906877">2482</unitid>
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                              <unittitle>Noordoostpolder,<unitdate calendar="gregorian" normal="1942/1963" era="ce">1942-1963</unitdate>
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                          <unittitle>Lelystad (eerst Flevostad); onderzoek naar te verwachten waterbezwaren in bouwputten.</unittitle>
                          <unitdate calendar="gregorian" normal="1952/1959" era="ce">1952-1959</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63906879">1030</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/133(520)</unitid>
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                          <did>
                            <unitid identifier="63906880">1096</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/133(725)</unitid>
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                            <unittitle>Bouwput voor de Houtribsluizen,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                        <unittitle>Niet naar een provincie toe te delen</unittitle>
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                        <did>
                          <unitid identifier="63906882">2317</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(5)</unitid>
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                          <unittitle>Modelonderzoek naar beweging grondwater in dijkslichaam onder invloed van fluctuerend buitenwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1955/1957" era="ce">1955-1957</unitdate>
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                        <did>
                          <unitid identifier="63906884">2320</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(7)</unitid>
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                          <unittitle>Deltagebied, geohydrologisch onderzoek in verband met de aanleg van diverse werken.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1969" era="ce">1965-1969</unitdate>
                          <physdesc>
                            <extent>pak</extent>
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                        <did>
                          <unitid identifier="63906885">2311</unitid>
                          <unitid audience="internal" type="obsolete">D19-73(1)</unitid>
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                          <unittitle>Twentekanalen, aanleg en bouw van diverse waterbouwkundige werken.</unittitle>
                          <unitdate calendar="gregorian" normal="1924/1940" era="ce">1924-1940</unitdate>
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                            <extent>pak</extent>
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                    <unitid type="series_code">68</unitid>
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                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
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                    <did>
                      <unittitle>ZANDWINNING</unittitle>
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                        <did>
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                          <unitid audience="internal" type="obsolete">A13-73/66</unitid>
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                          <unittitle>Het geven van advies aan Rijkswaterstaat inzake de totstandkoming van een regeling voor zandwinning.</unittitle>
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                      <did>
                        <unitid type="series_code">1.4.02</unitid>
                        <unittitle>PROVINCIES</unittitle>
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                          <unittitle>Friesland</unittitle>
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                            <unitid identifier="63907238">2435</unitid>
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                            <unittitle>Noorderbuitendijkenpolder, zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                        <did>
                          <unitid type="series_code">1.4.02.2</unitid>
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                            <unitid identifier="63907240">1752</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-013(1338)</unitid>
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                            <unittitle>Glindhorst, de opbrengstverhoging van grasland in het voorjaar ten gevolge van de vermindering van wateroverlast door grondwaterwinning door ir. H.A.J. van Lanen.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                          <did>
                            <unitid identifier="63907241">1138</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/112(769)</unitid>
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                            <unittitle>Groesbeek, nota inzake de hydrologische gevolgen van een ontzanding.</unittitle>
                            <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                      </c>
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                        <did>
                          <unitid type="series_code">1.4.02.3</unitid>
                          <unittitle>Utrecht</unittitle>
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                          <did>
                            <unitid identifier="63907243">741</unitid>
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                            <unittitle>Bethunepolder, verwachte gevolgen van zandwinning in de polders Maarsseveen en Westbroek ten aanzien van het kwelbezwaar.</unittitle>
                            <unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
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                          <did>
                            <unitid identifier="63907245">2336</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(52)</unitid>
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                            <unittitle>Maarssenbroekse polder, stijghoogte diep grondwater in verband met plannen zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
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                          <did>
                            <unitid identifier="63907246">2338</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(53)</unitid>
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                            <unittitle>Oostzijdse polder, gevolgen van zandwinning.</unittitle>
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                          <did>
                            <unitid identifier="63907247">2327</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(45)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ad0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Soest, zandwinning industrieterrein.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907248">2328</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(46)</unitid>
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                            <unittitle>Spengen, invloed zandwinning op vermeerdering kwelbezwaar waterschap Wilnis-Veldzijde.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907249">2332</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(50)</unitid>
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                            <unittitle>Wilnis-Veldzijde, ontzanding.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                            <unittitle>Alkmaardermeer.</unittitle>
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                            <did>
                              <unitid identifier="63907252">2334</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(57)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ad5-79fa-e053-09f0900a5ea8</unitid>
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                            <did>
                              <unitid identifier="63907253">1076</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/257(702)</unitid>
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                                <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          <did>
                            <unitid identifier="63907254">2359</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(63)</unitid>
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                            <unittitle>Bloemendaal, Lexmond en de Eendrachtspolder; onderzoek naar de bemaling ten behoeve van de zandwinning in de polders.</unittitle>
                            <unitdate calendar="gregorian" normal="1946/1947" era="ce">1946-1947</unitdate>
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                            <unitid>2416-2417</unitid>
                            <unittitle>Bullewijkerpolder, zandwinning in de Holendrechter-Bullewijkerpolder.</unittitle>
                            <unitdate calendar="gregorian" normal="1968/1972" era="ce">1968-1972</unitdate>
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                              <unitid identifier="63907256">2417</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(93)</unitid>
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                              <unittitle>
                                <unitdate calendar="gregorian" normal="1968/1972" era="ce">1968-1972</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                            <did>
                              <unitid identifier="63907257">2416</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(93)</unitid>
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                                <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                          <did>
                            <unitid identifier="63907258">2419</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(94)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5adb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gaasp; zandwinning in de Oostbijlmerpolder, Gein- en Gaasperpolder ten behoeve van ophoging van de Bijlmermeer.</unittitle>
                            <unitdate calendar="gregorian" normal="1958/1967" era="ce">1958-1967</unitdate>
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                          <did>
                            <unitid identifier="63907260">2363</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(67)</unitid>
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                            <unittitle>Grootslag, plan voor zandwinning in de polder nabij Enkhuizen.</unittitle>
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                          <did>
                            <unitid identifier="63907261">2364</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(68)</unitid>
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                            <unittitle>Haarlemmerliede, zandwinning in de Mooie Nel.</unittitle>
                            <unitdate calendar="gregorian" normal="1942/1972" era="ce">1942-1972</unitdate>
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                          <did>
                            <unitid identifier="63907262">1141</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/392(772)</unitid>
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                            <unittitle>Langedijk, het geven van advies aan de gemeentewerken van Broek inzake de gevolgen van een zandwinning uit het Ooster Del.</unittitle>
                            <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                          <did>
                            <unitid identifier="63907263">880</unitid>
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                            <unittitle>Nieuwe Meer, onderzoek naar de te verwachten gevolgen van zandwinning voor het boezem- en polderwater van Rijnland en Amstelland.</unittitle>
                            <unitdate calendar="gregorian" normal="1949/1952" era="ce">1949-1952</unitdate>
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                            <unitid identifier="63907264">2384</unitid>
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                            <unittitle>Noordwijkerhout, zandwinning Lange Veld.</unittitle>
                            <unitdate calendar="gregorian" normal="1948/1949" era="ce">1948-1949</unitdate>
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                          <did>
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                            <unittitle>Obdam, gevolgen van de zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
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                            <unittitle>Oudkarspel, zandwinning in de polder 't Waardje.</unittitle>
                            <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                                <unitid identifier="63907269">1245</unitid>
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                                <unitid identifier="63907270">2381</unitid>
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                              <unitid identifier="63907271">2437</unitid>
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                            <unitid identifier="63907272">1075</unitid>
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                            <unittitle>Riekerpolder en de Nieuwe Meer, hydrologische gevolgen van het uitbreiden van de zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1959/1963" era="ce">1959-1963</unitdate>
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                            <unittitle>Schaalsmeer, nota inzake een analyse van de water- en zouthuishouding ter bepaling van de zoute kwel ten gevolge van een zandwinning in het Heemraadschap Wormer, Jisp en Nek.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            <unitdate calendar="gregorian" normal="1952/1962" era="ce">1952-1962</unitdate>
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                            <did>
                              <unitid identifier="63907276">1004</unitid>
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                              <unitid identifier="63907277">1169</unitid>
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                                <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                                <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                            <unittitle>Westeinderplas, onderzoek naar de te verwachten gevolgen van zandwinning  voor het boezem- en polderwater voor Rijnland en Amstelland.</unittitle>
                            <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                              <unittitle>
                                <unitdate calendar="gregorian" normal="1941/1966" era="ce">1941-1966</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907286">1444</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/200(1430)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5af5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907287">1295</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/200(953)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5af6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907288">1249</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/432(899)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5af7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Broekvelden en Vettenbroek, polders; hydrologische gevolgen van de zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907289">2350</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(114)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5af8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Heenvliet, zandwinning Ondernemerspolder.</unittitle>
                            <unitdate calendar="gregorian" normal="1966/1967" era="ce">1966-1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907290">2414</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(143)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5af9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Kalkpolder, mogelijke gevolgen zandwinning onder Leiderdorp.</unittitle>
                            <unitdate calendar="gregorian" normal="1953/1967" era="ce">1953-1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907291">2415</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(144)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5afa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Ommedijkse Polder, zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1946/1947" era="ce">1946-1947</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907292">2387</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(125)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5afb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Reeuwijk, zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907293">2342</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(106)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5afc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rottemeren, Bleiswijksemeren.</unittitle>
                            <unitdate calendar="gregorian" normal="1964/1967" era="ce">1964-1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907294">2322</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(41)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5afd-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vinkeveense Plassen, gevolgen zandwinning voor laag gelegen polders.</unittitle>
                            <unitdate calendar="gregorian" normal="1939/1950" era="ce">1939-1950</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907295">2402</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(134)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5afe-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Voorschoten; zandwinning Hofpolder, Spekpolder en Rietpolder.</unittitle>
                            <unitdate calendar="gregorian" normal="1964/1968" era="ce">1964-1968</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2404, 2406</unitid>
                            <unittitle>Warmond, zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63907299">2404</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(136)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b00-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voorhofpolder,<unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907300">2406</unitid>
                              <unitid audience="internal" type="obsolete">D19-73(137)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b01-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Zwanburgerpolder,<unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907302">2410</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(139)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b02-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zoetermeer, voorgenomen zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1965/1966" era="ce">1965-1966</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907304">2411</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(140)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b03-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zoeterwoude, zandwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907305">2412</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(141)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b04-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zwammerdam, gevolgen voorgenomen zandwinning voor wegenaanleg.</unittitle>
                            <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.4.02.6</unitid>
                          <unittitle>Limburg</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Bergen.</unittitle>
                            <unitdate calendar="gregorian" normal="1952/1965" era="ce">1952-1965</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63907310">1013</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/270(516)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b07-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1952/1953" era="ce">1952-1953</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907311">968</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/270(606)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b08-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907313">1016</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/270(636)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b09-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907315">1092</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/270(721)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b0a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907316">1175</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/270(825)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b0b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907318">1300</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/409(910)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b0c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907319">1137</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/351(761)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b0d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Horst-Venray, modelonderzoek inzake de watervoorziening van landbouwgronden in het proefgebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907321">2468</unitid>
                            <unitid audience="internal" type="obsolete">D19-73(207)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5b0e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Roermond, invloed van een zandontgraving en de herkomst van grondwater in het recreatiegebied ten oosten van Asenraij.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">69</unitid>
                    <unittitle>Het adviseren inzake rioleringsplannen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Grondslag: Bijdrageregeling kostbare rioleringswerken (Stcrt. 1979, 241).
</item>
                      <item>Product: Rapport.
</item>
                      <item>Opm.: Deze handeling valt binnen het kader van handeling 946 van BSD Milieubeheer: `Het goedkeuren van te subsidiëren projectplannen'.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.1</unitid>
                      <unittitle>HET ADVISEREN INZAKE PROVINCIALE RIOLERINGSPLANNEN</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.01</unitid>
                        <unittitle>Groningen</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907502">3202</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bb4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Adorp.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907503">3235</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bb5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eenrum.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907504">3250</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bb6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ezinge.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907505">3189</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bb7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Grijpskerk.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907506">3192</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bb8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leens.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907507">3253</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bb9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Marum.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907508">3230</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bba-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Slochteren.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907509">3241</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bbb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuidhorn.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.02</unitid>
                        <unittitle>Friesland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907511">3203</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bbd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Achtkarspelen.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907512">3251</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bbe-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Barradeel.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907513">3244</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bbf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Harlingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907515">3139</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Idaarderadeel.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907516">3245</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leeuwarderadeel.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid>3246A</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/d2944109-2b7f-9283-e053-6df0900aec3e</unitid>
                          <unittitle>Rauwerderhem.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907518">3229</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sloten.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907519">3196</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Workum, fase 2.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.03</unitid>
                        <unittitle>Drenthe</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907521">3191</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Anloo.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907522">3220</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Assen.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907523">3193</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dalen.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907524">3236</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bc9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Emmen.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907525">3185</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bca-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Norg.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907526">3180</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bcb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rolde.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907527">3247</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bcc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schoonebeek.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907529">3174</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bcd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Smilde.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907530">3240</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vries.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907531">3199</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bcf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wijk, De.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907532">3148</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuidlaren.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.04</unitid>
                        <unittitle>Overijssel</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907534">3217</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Almelo.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907535">3170</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Deventer.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907536">3138</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kampen.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907537">3172</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Staphorst.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907538">3215</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Steenwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.05</unitid>
                        <unittitle>Gelderland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907540">3201</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Aalten.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907541">3213</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bd9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Duiven.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907542">3157</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bda-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Huissen.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907544">3154</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bdb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hunsel.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907545">3194</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bdc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maurik, rioleringsproject Ravenswaay.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907546">3233</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bdd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Westervoort.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907547">3211</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bde-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zevenaar.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.06</unitid>
                        <unittitle>Utrecht</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907549">3218</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5be0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amerongen.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907550">3224</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5be1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Loosdrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907551">3168</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5be2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vinkeveen.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3165, 3238</unitid>
                          <unittitle>Wilnis.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <odd>
                          <p>Fase 1 niet aangetroffen</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63907555">3165</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5be6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Fase 2,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907556">3238</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5be7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Fase 3,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907557">3197</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5be8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Woudenberg.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.07</unitid>
                        <unittitle>Noord-Holland</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3155-3156</unitid>
                          <unittitle>Aalsmeer.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907561">3155</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5beb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advies,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907562">3156</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bec-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bijlage,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907563">3222</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bed-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amsterdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907564">3242</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bee-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Drechterland.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907565">3188</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bef-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>'s-Graveland (rioleringsproject Kortenhoef).</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907566">3150</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haarlem.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907567">3151</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haarlemmerliede en Spaarnwoude (rioleringsproject woonboten te Halfweg).</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907568">3177</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hoorn.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907569">3141</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Katwoude.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907570">3252</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Medemblik.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907571">1732</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1979-001(1314)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Muiden.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3144, 3146</unitid>
                          <unittitle>Nieuwpoort-Langerak.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907573">3144</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907574">3146</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Project Liesdel, plan West,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907576">3184</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bf9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noorder Koggenland.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907577">3161</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bfa-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oostzaan.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907578">3171</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bfb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Purmerend.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907579">3178</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bfc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Stede Broec.</unittitle>
                          <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3182, 3232</unitid>
                          <unittitle>Wervershoof.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907581">3182</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bfe-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907582">3232</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5bff-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsproject Zwaagdijk-Oost,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907583">3255</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c00-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wognum.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3190, 3209</unitid>
                          <unittitle>Zaanstad.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907585">3209</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c02-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907586">3190</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c03-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsproject Koog aan de Zaan,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907587">3231</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c04-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zaanstad-Westzaan.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907588">3208</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c05-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zandvoort.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907589">3207</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c06-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zeevang.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.08</unitid>
                        <unittitle>Zuid-Holland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907591">3228</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c08-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Berkel en Rodenrijs.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907592">3175</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c09-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Brandwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907593">3169</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c0a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Giessenburg.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907594">3237</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c0b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leimuiden, rioleringsproject Bilderdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907595">3221</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c0c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maasdam.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907596">3163</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c0d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oostflakkee.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907597">3246</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c0e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Reeuwijk.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907598">3205</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c0f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zevenhuizen.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.09</unitid>
                        <unittitle>Zeeland</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907600">3179</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c11-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hontenisse.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907601">3142</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c12-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hulst.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907602">3195</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c13-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wouw.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907603">3149</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c14-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zierikzee.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.10</unitid>
                        <unittitle>Noord-Brabant</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907606">3219</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c16-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ammerzoden.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3152, 3216</unitid>
                          <unittitle>Halsteren.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907608">3216</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c18-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907609">3152</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c19-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsproject Vetterik,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907610">3158</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c1a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>'s-Hertogenbosch.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907611">3187</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c1b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leende, rioleringsproject Leenderstrijp.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3145, 3234</unitid>
                          <unittitle>Lith.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907613">3145</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c1d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsproject Teeffelen,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907614">3234</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c1e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsprojecten Teeffelen en 't Wild,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907615">3186</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c1f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nistelrode.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3181, 3206</unitid>
                          <unittitle>Oirschot.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907617">3181</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c21-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907618">3206</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c22-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsprojecten Lieveld en omgeving, Moorland en omgeving,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3164, 3200</unitid>
                          <unittitle>Oosterhout.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907620">3164</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c24-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907621">3200</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c25-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsproject Dorst,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907622">3248</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c26-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sint Anthonis.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907623">3249</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c27-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Veldhoven.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907624">3198</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c28-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Woudrichem.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.1.11</unitid>
                        <unittitle>Limburg</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907626">3159</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c2a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Beegden; rioleringsproject Oosderweg-Eertweg, aanleg stamriool.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907627">3226</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c2b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bergen-Siebengewald.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907628">3212</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c2c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gennep, rioleringsproject Milsbeek Bloemenstraat.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907629">3162</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c2d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gronsveld.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907630">3254</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c2e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gulpen.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907631">3225</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c2f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haelen.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907633">3176</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c30-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Horst.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907634">3140</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c31-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hunsel, rioleringsproject Persleiding Haler-Hunsel.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907635">3143</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c32-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kerkrade, rioleringsproject Eijgelshoven.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907636">3173</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c33-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Klimmen, rioleringsproject Kaardenbeek.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907637">3160</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c34-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Maasbree.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3166, 3227</unitid>
                          <unittitle>Margraten.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907639">3227</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c36-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907640">3166</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c37-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rioleringsproject Groot en Klein Welsden,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907641">3223</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c38-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Meerssen.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907642">3183</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c39-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nuth.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907643">3243</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c3a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Sevenum, rioleringsproject De Steeg.</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907644">3214</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c3b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Tegelen.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907645">3204</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c3c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Urmond, rioleringsproject Bergingsbassin de Bramert.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907646">3153</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c3d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vaals.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907647">3210</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c3e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wijlre.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907648">3167</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c3f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wittem.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        </did>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">70</unitid>
                    <unittitle>Het adviseren inzake drinkwaterkwaliteit.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Opm.: Tot 1979 werden gemeenten en provincies geadviseerd.<lb></lb>Deze handeling past binnen het kader van handeling 333 van BSD Milieubeheer.<lb></lb>In 1979 heeft de Waterleidingwet het Rijk de bevoegdheid gegeven om nadere regels te stellen, die de provinciale bevoegdheid tot het maken van verordeningen overbodig maakte.<lb></lb>De adviezen van het RID gingen toen dan ook richting het Rijk.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.14</unitid>
                      <unittitle>ADVIEZEN INZAKE DRINKWATERKWALITEIT</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.14.01</unitid>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid>2935A</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/d2944109-2965-9283-e053-6df0900aec3e</unitid>
                          <unittitle>Onderzoek naar het toelaatbare loodgehalte in drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1935/1961" era="ce">1935-1961</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907662">3126</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c4c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Meetnet kwaliteit oppervlaktewater voor de drinkwatervoorziening van Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907663">257</unitid>
                          <unitid audience="internal" type="obsolete">74-83/266</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c4d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoeken naar de gevolgen van ontharding van drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907664">1678</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1974-5(13)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c4e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kwaliteitseisen met betrekking tot het veiligstellen van gewenste bestemmingen van zoet oppervlaktewater.</unittitle>
                          <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907665">114</unitid>
                          <unitid audience="internal" type="obsolete">74-83/46</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c4f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het verlenen van medewerking aan het onderzoek over het gebruik van chloor en chloordioxyde in de drinkwaterzuivering.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1979" era="ce">1974-1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907666">3040</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c50-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de invloed van waterbehandelingsprocessen op de drinkwaterkwaliteit in relatie tot de volksgezondheid.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1981" era="ce">1974-1981</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907667">96</unitid>
                          <unitid audience="internal" type="obsolete">74-83/84</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c51-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Enquête verricht door het Nederlands Instituut voor de Publieke Opinie en het Marktonderzoek (NIPO) in opdracht van het RID om de minister van Volksgezondheid en Milieuhygiëne te adviseren over het huishoudelijk waterverbruik van bevolking en industrie.</unittitle>
                          <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907668">258</unitid>
                          <unitid audience="internal" type="obsolete">74-83/267</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c52-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het samen met het Centraal Bureau voor de Statistiek opstellen van een enquête inzake het consumptieve gebruik van kraanwater in huishoudens in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907669">259</unitid>
                          <unitid audience="internal" type="obsolete">74-83/268</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c53-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapporten inzake het onderzoek naar metaalconcentraties in het drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907670">1576</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1976-001(1205)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c54-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport inzake de mogelijke invloed van de landbouw op de kwaliteit van het grondwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907671">254</unitid>
                          <unitid audience="internal" type="obsolete">74-83/262</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c55-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Uitkomsten van het analyseren van drinkwatermonsters op organische halogeenverbindingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907672">187</unitid>
                          <unitid audience="internal" type="obsolete">74-83/212</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c56-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het behandelen van water met Vyredox.</unittitle>
                          <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907673">1686</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1977-1(20)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c57-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota van drs. P.H.A.M. Meils inzake vorming van organische halogeenverbindingen tijdens de chloring van drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907674">1674</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1977-006(1238)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c58-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de nevenaspecten voor de volksgezondheid bij het gebruik van ozon tijdens de bereiding van drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907675">67</unitid>
                          <unitid audience="internal" type="obsolete">74-83/76</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c59-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Totstandkoming nota inzake onderbouwing norm voor het zout en met name het natrium gehalte van drinkwater in verband met E.G. richtlijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907676">262</unitid>
                          <unitid audience="internal" type="obsolete">74-83/272</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c5a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake agressiviteit van het in Nederland gedistribueerde drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907677">261</unitid>
                          <unitid audience="internal" type="obsolete">74-83/270</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c5b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de kwaliteit van verwarmd drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907678">1658</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1978-001(1286)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c5c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de kwaliteit van de watervoorziening op 27 kampeerterreinen en bij 6 jachthavens in Zeeland door ing. A.W. Kolster en ir. A.A. Kranenburg.</unittitle>
                          <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907679">255</unitid>
                          <unitid audience="internal" type="obsolete">74-83/263</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c5d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Diverse aangelegenheden met betrekking tot het onderzoek naar de kwaliteit van drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907680">2831</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c5e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Een nadere beschouwing van drinkwaterprojecten ten behoeve van een consequentie-analyse van radio-actieve lozingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907681">1698</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1979-4(30)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c5f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de gezondheid en organische stoffen in drinkwater door H.J. Kool, C.F. van Kreijl en W. Slooff in samenwerking met G.J. Piet en E. de Greef.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907682">3038</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c60-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar het voorkomen van organische stoffen met mutagene (carcinogene) eigenschappen in verband met gezondheidsaspecten van het drinkwater; analyseformulieren en andere onderzoeksuitslagen.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907683">397</unitid>
                          <unitid audience="internal" type="obsolete">74-83/265</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c61-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek ten behoeve van een smaakbepalingsmethodiek voor drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907684">1701</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1980-1(32)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c62-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Corrosiviteitsbepaling van drinkwater met betrekking tot loden en koperen leidingen door B.J.A. Haring en W. van Delft.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907685">1304</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1981-006(1358)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c63-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verspreiding van methylbromide in de bodem en verwijdering van methylbromide uit drinkwater door koken.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907686">1396</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1983-004(1404)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c64-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noodlottige en ecologische effecten van verontreinigende stoffen in watersystemen door Tom Aldenberg.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.14.02</unitid>
                        <unittitle>GEMEENTEN EN REGIO'S</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Lekkerkerk.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1982" era="ce">1978-1982</unitdate>
                        </did>
                        <odd>
                          <p>Als op 15 september 1979 de hoofdwaterleiding in de Jan Ligthartstraat in Lekkerkerk springt, is dat een gebeurtenis met grote gevolgen die uiteindelijk zal leiden tot Nederlands eerste grote gifschandaal. Bijna driehonderd gezinnen moeten evacueren, een hele wijk wordt afgegraven en 1600 vaten met chemisch afval worden uit de bodem gehaald.</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63907692">3039</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c69-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de bodem- en grondwaterverontreiniging in de gemeente Lekkerkerk,<unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907693">1697</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/551(1279)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c6a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake een onderzoek naar de grondwaterkwaliteit in de wijk Molenwerf te Lekkerkerk,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907694">1768</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-006(1350)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c6b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Begeleidend onderzoek van de proefontgraving op 24 april 1980 in de wijk Lekkerkerk-West te Lekkerkerk,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907695">1759</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-002(1352)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c6c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek betreffende ondiepe boringen verricht op 16 april 1980 in de wijk Lekkerkerk-West te Lekkerkerk,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907696">1761</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-011(1345)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c6d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de kwalitatieve beïnvloeding van het grondwater in de wijk Lekkerkerk-West te Lekkerkerk,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907697">1763</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-010(1346)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c6e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de kwaliteit van drinkwater af pompstation Tiendweg en van perifeer drinkwater in de wijk Lekkerkerk-West te Lekkerkerk,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907698">1767</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-007(1349)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c6f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de kwaliteit van oppervlaktewater in de wijk Lekkerkerk-West te Lekkerkerk,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>51-53</unitid>
                            <unittitle>Onderzoek van bodem en grondwater in de wijk Lekkerkerk-West in de gemeente Lekkerkerk.<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63907700">53</unitid>
                              <unitid audience="internal" type="obsolete">74-83/65</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c71-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Diverse rapporten,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907701">51</unitid>
                              <unitid audience="internal" type="obsolete">74-83/65</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c72-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de verontreiniging van perifeer drinkwater in de wijk Molenwerf te Lekkerkerk tevens onderzoeken van andere instituten,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907702">52</unitid>
                              <unitid audience="internal" type="obsolete">74-83/65</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c73-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapportagewerkzaamheden,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>263, 1699</unitid>
                          <unittitle>Hendrik-Ido-Ambacht, gemeente.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907704">263</unitid>
                            <unitid audience="internal" type="obsolete">74-83/273</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c75-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoeken van het hoge nitrietgehalte in het drinkwater,<unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907705">1699</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/547(1298)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c76-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de oorzaak van het hoge nitrietgehalte van het drinkwater,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907706">264</unitid>
                          <unitid audience="internal" type="obsolete">74-83/274</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c77-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Katwijk, gemeente; onderzoek naar de drinkwaterverontreiniging.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907707">1383</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1982-020(1396)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c78-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Panheel, analyse van de mogelijkheden in de opzet van het drinkwaterproduktieproces opgesteld door J.G.W. van Megen.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>300, 2703</unitid>
                          <unittitle>Rijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1968/1973" era="ce">1968-1973</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907709">2703</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c7a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota aan de Hoofdingenieur-Directeur van Rijkswaterstaat inzake de zoutlast in relatie tot de watervoorziening,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907710">300</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/36</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c7b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Advies aan de minister inzake de verontreiniging,<unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2932-2934, 2936</unitid>
                          <unittitle>Tiel, onderzoek naar het voorkomen van fluor in het drinkwater en naar de invloed daarvan op de toestand van het menselijk gebit.</unittitle>
                          <unitdate calendar="gregorian" normal="1946/1972" era="ce">1946-1972</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907712">2934</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c7d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1946/1952" era="ce">1946-1952</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907713">2932</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c7e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1953/1961" era="ce">1953-1961</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907714">2936</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c7f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1962/1972" era="ce">1962-1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907715">2933</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c80-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Documentatie,<unitdate calendar="gregorian" normal="1952/1962" era="ce">1952-1962</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907716">1423</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1983-001(1420)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c81-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Valkenswaard, Bergeijk, Luijkgestel, Westerhoven en Budel, gemeenten; onderzoek van het drinkwater afkomstig uit een dertigtal eigen voorzieningen verricht door dr. F.J.J. Brinkman.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907717">672</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/110(244)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c82-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Voorburg, verbetering van de kwaliteit van het water der NV Waterleidingmaatschappij.</unittitle>
                          <unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907719">44</unitid>
                          <unitid audience="internal" type="obsolete">74-83/58</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5c83-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wierden, gemeente; het onderzoeken van de water- en bodemverontreiniging.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">72</unitid>
                    <unittitle>Het adviseren inzake de bescherming van grondwater.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Bewerkingsplan Archief Rijksinstituut voor Drinkwatervoorziening, Ministerie van Volksgezondheid, Welzijn en Sport, CDBFO/DIV, april 1995.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Opm.: Dit zijn: adviezen aan de Planologische Werkcommissie (PWC) inzake de aanleg van gas- en olieleidingen (Economische Zaken) en de Commissie Opslag Gevaarlijke Stoffen.<lb></lb>In dit verband is een aantal verwijzingen op zijn plaats:<lb></lb>Wat betreft een omschrijving van de activiteiten van de planologische Werkcommissie zij verwezen naar pagina 21 en 237 van het RIO nr. 83, Energiedelfstoffen. In dit verband zijn handelingen 365 t/m 368 relevant.<lb></lb>Wat betreft de opslag van (milieu-) gevaarlijke stoffen zij verwezen naar handeling 285, 566 t/m 571 en 594 t/m 595 in BSD Milieubeheer.<lb></lb>De Commissie Opslag Gevaarlijke Stoffen is ingesteld door het Ministerie van Verkeer en Waterstaat, en valt hierdoor<lb></lb>onder de handhaving van het vervoerswezen.<lb></lb>Feitelijk betreft het het vervoer van gevaarlijke stoffen. De Commissie Opslag Gevaarlijke Stoffen is buiten RIO Milieubeheer gehouden, omdat het vervoerswezen viel onder het Ministerie van Verkeer en Waterstaat.<lb></lb>Tot op heden zijn de handelingen van de Commissie Opslag Gevaarlijke Stoffen echter niet beschreven.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63907788">898</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/264(465)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cc6-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de gevolgen van een uitbreiding van de grondwateronttrekking door de pompstations van Van Gelder en Zonen en de Koninklijke Nederlandse Hoogovens en Staalfabrieken in Tussenwijk op de grondwaterstand in de omliggende terreinen.</unittitle>
                      <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907789">870</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/288(545)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cc7-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de invloed van de werking van het onder<lb></lb>Castricum gelegen secundaire pompstation G. van het Provinciaal<lb></lb>Waterleidingbedrijf van Noord-Holland op de grondwaterstand in de<lb></lb>cultuurgronden in de omgeving.</unittitle>
                      <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907790">990</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/339(621)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cc8-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake de gevolgen van een vergroting van de wateronttrekking aan Het Gooi ten aanzien van de grondwaterstand in Het Gooi en zijn randgebieden.</unittitle>
                      <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907791">1118</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/085(752)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cc9-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de mogelijke invloed van de bemaling van de bouwput voor een schutsluis nabij Macharen (Noord-Brabant) op de grondwaterstand.</unittitle>
                      <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907792">1151</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1961-024(778)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cca-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake een isohypsenkaart van het diepe grondwater in de provincie Noord-Brabant en in Noord-België.</unittitle>
                      <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907793">1199</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/414(837)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ccb-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de gevolgen van grondwateronttrekking aan een in te richten winplaats in de gemeente Bunnik.</unittitle>
                      <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907794">1345</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/485(1034)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ccc-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake de chemische samenstelling van het grondwater van de Veluwe.</unittitle>
                      <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907795">1375</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/414(1067)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ccd-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake de daling van de stand van het grondwater in de gemeente Zeist.</unittitle>
                      <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907796">1434</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/139(1100)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cce-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake de chemische samenstelling van het grondwater van de Oostelijke Betuwe.</unittitle>
                      <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907797">1508</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1974-001(1142)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ccf-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Discussienota betreffende kwaliteitsverandering van het grondwater te Holten ten behoeve van een onderzoek naar het ijzergehalte in grondwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907799">1542</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1974-009(1169)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd0-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Hydrologisch onderzoek naar de gevolgen van zandwinning en de veranderingen van de grondwaterstanden in de  Wellsche Meer in de gemeente Bergen.</unittitle>
                      <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907800">198</unitid>
                      <unitid audience="internal" type="obsolete">74-83/135</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd1-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoeken naar organische componenten in het grondwater bij de vuilstortplaats in de gemeente Noordwijk.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1979" era="ce">1974-1979</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907801">1560</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1975-010(1192)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd2-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de invloed van de onttrekking door het pompstation Bergambacht op de grondwaterstijghoogten<lb></lb>.</unittitle>
                      <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907802">3033</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd3-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de aanwezigheid van vluchtige organische chemicaliën in grondwater bestemd voor de drinkwatervoorziening.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1982" era="ce">1976-1982</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907803">190</unitid>
                      <unitid audience="internal" type="obsolete">74-83/215</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd4-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Diverse aangelegenheden met betrekking tot het landelijk meetnet grondwaterkwaliteit met ondermeer discussienota en interne nota.</unittitle>
                      <unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907804">1617</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1977-008(1240)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd5-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het vyredox-systeem een methode ter ontijzering en ontmanganing van grondwater in de bodem door ir. M.C. Brandes, ir. P. Glasbergen en ir. J. Hrubec.</unittitle>
                      <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907805">1629</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1977-015(1253)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd6-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de samenstelling en stroming van zoet grondwater in een Westnederlands poldergebied (het eiland van Dordrecht) door ir. C.R. Meinardi en ir. G.J. Heij.</unittitle>
                      <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907806">3037</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd7-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de kwaliteit van het grondwater en grondwaterverontreiniging in de vuilstortpercolaat Delden.</unittitle>
                      <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907807">2833</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd8-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Radioactieve besmetting van grondwater, een berekeningsmethodiek.</unittitle>
                      <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907808">1691</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1978-2(25)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cd9-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenstelling en stroming van zoet grondwater in een Westnederlands poldergebied (het eiland van Dordrecht) door ir. C.R. Meinardi en ir. G.J. Heij.</unittitle>
                      <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907809">193</unitid>
                      <unitid audience="internal" type="obsolete">74-83/218</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cda-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de grondwaterverontreiniging bij het pompstation Wierden in de gemeente Almelo.</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907810">225</unitid>
                      <unitid audience="internal" type="obsolete">74-83/227</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cdb-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het onderzoeken van de kwaliteitsvariaties van het grondwater naar de diepte en in de tijd.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907811">42</unitid>
                      <unitid audience="internal" type="obsolete">74-83/56</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cdc-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het onderzoeken van de invloed van macrodispersie op het transport door de bodem van grondwater en de daarin opgeloste stoffen.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907813">1321</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1981-012(1375)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cdd-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Grondwaterstandsanalyse in de omgeving van het pompstation Son.</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907814">1322</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1981-024(1376)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cde-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Oriënterend onderzoek naar de aard en omvang van een grondwaterverontreiniging te Oss (Boschpoort).</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63907815">1313</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1981-007(1366)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cdf-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Resultaten van een oriënterend onderzoek van grondwater uit de gemeente Gouderak opgesteld door drs. E. de Greef.</unittitle>
                      <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">73</unitid>
                    <unittitle>Het adviseren inzake de winning van grondwater.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Grondslag: Grondwaterwet waterleidingbedrijven (Stb. 1954, 383), art. 7, lid 4.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Opm.: Hieronder worden begrepen adviezen aan de Commissie Grondwaterwet Waterleidingbedrijven over vergunningen in het kader van de Grondwaterwet Waterleidingbedrijven.<lb></lb>Deze handeling maakt onderdeel uit van handeling 716 van BSD Milieubeheer: Het beslissen op een verzoek tot het verrichten van onderzoekingen op gronden of wateren, ingediend door de aanvrager van een vergunning voor het tot stand brengen, wijzigen of inwerking hebben van een inrichting, bedoeld om water aan de bodem te onttrekken.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.8</unitid>
                      <unittitle>HET ADVISEREN INZAKE WINNING VAN GRONDWATER</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.8.01</unitid>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907826">969</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/326(607)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cea-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Grondwaterwinning door middel van een centrale put met horizontale en hellende filters.</unittitle>
                          <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907827">1073</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/019(698)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ceb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verwachte daling van de grondwaterstand ten gevolge van de waterwinning op een door het gas- en waterbedrijf der gemeente Amersfoort te stichten waterwinplaats bij de Amersfoortse Berg.</unittitle>
                          <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907828">1153</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/060(779)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cec-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de te verwachten gevolgen van een onttrekking van 2,5 miljoen m3 water per jaar aan de waterwinplaats De Mondaf van de gemeentebedrijven te Bergen op Zoom.</unittitle>
                          <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907829">1415</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(1091)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ced-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de problematiek bij de winning van oevergrondwater door ir. P.J. Verkerk.</unittitle>
                          <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907830">1518</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(998)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cee-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Beschikbaarheid van zoet grondwater ten behoeve van de waterwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907831">1457</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/055(1110)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cef-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Advies inzake mogelijkheden en gevolgen van grondwaterwinning in het waterwingebied te Dorst door het energie- en waterbedrijf van de gemeente Breda.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907833">1405</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1972-022(1086)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Methoden ter berekening van de verlagingen van het freatisch vlak tengevolge van waterwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907834">2950</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Waterwinning in nationale landschapsparken.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907835">3047</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De ontwikkeling van berekeningsmethoden voor zoet- en zout grondwaterstromingen.</unittitle>
                          <unitdate calendar="gregorian" normal="1977/1982" era="ce">1977-1982</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907836">1708</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1980-6(36)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Hydrologisch onderzoek naar de winningsmogelijkheden van grondwater door C.R. Meinardi, G.J. Heij en H.A.J. van Lanen.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907837">1335</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1982-011(1388)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport winning van oevergrondwater; algemene hydrologische en hydrochemische aspecten.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.8.02</unitid>
                        <unittitle>PROVINCIES</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.8.02.1</unitid>
                          <unittitle>Groningen</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907840">601</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/021(108)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bareveld, Onnerpolder of aan De Punt; vergelijkende berekeningen voor de veenkoloniale waterleiding inzake vestigingen van de waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907841">602</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/021(109)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cf8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Veenkoloniën, vergelijkende berekening naar de invloed van de ligging van de waterwinplaats op de bedrijfskosten van een waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.8.02.2</unitid>
                          <unittitle>Friesland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907843">509</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/092(37)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cfa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Aanleg van drie waterwinplaatsen in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>943, 966</unitid>
                            <unittitle>NV Intercommunale Waterleiding Gebied Leeuwarden.</unittitle>
                            <unitdate calendar="gregorian" normal="1952/1955" era="ce">1952-1955</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63907845">966</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/275(499)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cfc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De te verwachten daling van de grondwaterstand onder invloed van de waterwinning op het eiland Vlieland,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907846">943</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/313(587)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cfd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de te verwachten verlaging van de grondwaterstand onder invloed van waterwinning in de zandduinen te Appelscha,<unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907847">1641</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1978-020(1268)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cfe-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hollum, Ameland; nota inzake enige berekeningen met behulp van een elektrisch netwerkmodel voor de invloed van de grondwaterwinning op de grondwaterstanden.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907849">1713</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1979-006(1306)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5cff-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oostermeer, te verwachten verlagingen van de grondwater-stijghoogte ten gevolge van de geplande grondwateronttrekking.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.8.02.3</unitid>
                          <unittitle>Drenthe</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907851">1282</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/078(941)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d01-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Toekomstige mogelijkheden in de provincie voor de winning van grondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907852">213</unitid>
                            <unitid audience="internal" type="obsolete">74-83/153</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d02-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Waterwinning in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907853">706</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/236(280)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d03-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Veenhuizen, nota inzake de levering van water door de NV Waterleiding Maatschappij Drenthe Rijkswerkinrichting.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.8.02.4</unitid>
                          <unittitle>Overijssel</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63907855">1454</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/093(965)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d05-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Mogelijkheden van grondwaterwinning in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1069, 1260</unitid>
                            <unittitle>Waterleiding Maatschappij NV Overijssel.</unittitle>
                            <unitdate calendar="gregorian" normal="1959/1966" era="ce">1959-1966</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63907857">1069</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/069(693)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d07-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de mogelijkheid tot het vergroten van de capaciteit van de waterwinplaats Het Engelse Werk bij Zwolle,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907858">1260</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/093(917)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d08-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterwinplaats Holten,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907859">1435</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/524(1429)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d09-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Almelo, gemeente; mogelijkheid tot uitbreiding van de grondwaterwinning door het pompstation Wierden.</unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907860">1458</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/093(966)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d0a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Archemerberg, grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                          <did>
                            <unitid identifier="63907861">1239</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/093(888)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d0b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hardenberg, gevolgen van de grondwaterwinning op het pompstation Brucht.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                          <did>
                            <unitid>826, 1472</unitid>
                            <unittitle>Hengelo, gemeente.</unittitle>
                            <unitdate calendar="gregorian" normal="1944/1973" era="ce">1944-1973</unitdate>
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                            <did>
                              <unitid identifier="63907863">826</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/013(377)</unitid>
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                              <unittitle>Mogelijke inrichting van een aanvullende grondwaterwinplaats langs de spoorbaan Hengelo-Boekelo,<unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
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                            <did>
                              <unitid identifier="63907864">1472</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1973-007(1116)</unitid>
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                              <unittitle>Onderzoek naar de mogelijkheid van grondwaterwinning in de omgeving van Beundersveld,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907866">1744</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/043(1027)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d0f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Losser, onderzoek naar de invloed van de waterwinning op het bovenste grondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907867">1585</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-030(1210)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d10-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oldenzaal, hydrologische gevolgen van grondwateronttrekkingen in de omgeving van het pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                        <did>
                          <unitid type="series_code">1.8.02.5</unitid>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907869">1588</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-032(1212)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d12-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Doetinchem, hydrologisch onderzoek van de waterwinning De Pol.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907870">1027</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/346(648)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d13-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Groenlo, nota inzake verlaging van de grondwaterstand onder invloed van waterwinning door de NV Grolsche Bierbrouwerij De Klok.</unittitle>
                            <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907871">1113</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/016(742)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d14-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Lek en IJssel, Waterleiding; het stichten van één of meer grondwaterwinplaatsen.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907872">1106</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/042(737)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d15-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Middachterbos, nota inzake de te verwachten vermindering van de kwel langs de Veluwerand tussen de Steeg en Dieren ten gevolge van de inrichting van een waterwinplaats door de NV Waterleiding Oostelijk Gelderland.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                            <unitid>1166, 1220</unitid>
                            <unittitle>Montferland.</unittitle>
                            <unitdate calendar="gregorian" normal="1962/1964" era="ce">1962-1964</unitdate>
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                            <did>
                              <unitid identifier="63907874">1166</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/042(801)</unitid>
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                              <unittitle>Mogelijkheid van de grondwaterwinning,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                            <did>
                              <unitid identifier="63907875">1220</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/042(859)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d18-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verlaging van de grondwaterstand ten gevolge van de waterwinning in de pompstations Montferland en Galgenberg,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907876">184</unitid>
                            <unitid audience="internal" type="obsolete">74-83/210</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d19-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nijmegen, gemeente; pompproef ten behoeve van de grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907877">1026</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/328(647)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d1a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Putten, onderzoek naar de te verwachten daling van de grondwaterstand onder invloed van waterwinning door de NV Waterleidingmaatschappij Gelderland.</unittitle>
                            <unitdate calendar="gregorian" normal="1956/1957" era="ce">1956-1957</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907878">814</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/013(413)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d1b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Twekkelo, resultaten van de peilwaarnemingen verricht in de jaren 1944- 1946 ten behoeve van de inrichting van een waterwinplaats voor de gemeente Hengelo.</unittitle>
                            <unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907879">1343</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1031)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d1c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Veluwe, globale en voorlopige schatting van de totale hoeveelheid grondwater die kan worden gewonnen.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907881">1420</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/028(1096)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d1d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zuidelijke Veluwezoom, mogelijkheden ter bepaling van de winbare hoeveelheid grondwater in het gebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907882">1164</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/017(799)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d1e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zutphen, gemeente; mogelijkheden tot het vergroten van de wateronttrekking aan de grondwaterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.8.02.6</unitid>
                          <unittitle>Utrecht</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907884">215</unitid>
                            <unitid audience="internal" type="obsolete">74-83/154</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d20-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Waterwinning in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907885">1036</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/353(671)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d21-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bilt De, gemeente; daling van de grondwaterstand ten gevolge van de waterwinning op het landgoed Beerschoten.</unittitle>
                            <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907886">685</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/112C(260)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d22-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Stichting De Drinkwaterleiding Noord-West Utrecht; nota inzake wateronttrekking aan de bodem door het pompstation Loosdrecht.</unittitle>
                            <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63907887">1716</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1981-1(38)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d23-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>West-Utrecht, de opbrengstverandering bij grasland ten gevolge van diepe grondwaterwinning door H.A. van Lanen.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
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                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.8.02.7</unitid>
                          <unittitle>Noord-Holland</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907889">922</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/316(572)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d25-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Provinciaal Waterleidingbedrijf Noord-Holland; nota inzake de gevolgen van de wateronttrekking op de grondwaterstand door de onder Heemskerk gelegen secundaire pompstations III, IV en V.</unittitle>
                            <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907890">388</unitid>
                            <unitid audience="internal" type="obsolete">B456/13-73(2)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d26-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gooi, onderzoek naar de gevolgen van wateronttrekking door drinkwaterbedrijven.</unittitle>
                            <unitdate calendar="gregorian" normal="1956/1973" era="ce">1956-1973</unitdate>
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                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907891">920</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/074(570)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d27-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Texel, onderzoek naar de te verwachten invloed op de grondwaterstand door wateronttrekking aan het duingebied De Mok.</unittitle>
                            <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                        <did>
                          <unitid type="series_code">1.8.02.8</unitid>
                          <unittitle>Zuid-Holland</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907893">704</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/137(278)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d29-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Westen des Lands, winning van grondwater buiten de duinen ten behoeve van de drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                            <unitid>673, 715</unitid>
                            <unittitle>Westlandsche Drinkwaterleidingmaatschappij NV.</unittitle>
                            <unitdate calendar="gregorian" normal="1936/1938" era="ce">1936-1938</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907896">673</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/115(245)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d2b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de capaciteit van de waterwinplaats,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907897">715</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/115(286)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d2c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake waterlevering aan 's-Gravenzande en Hoek van Holland,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907898">188</unitid>
                            <unitid audience="internal" type="obsolete">74-83/216</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d2d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Alblasserwaard en de Vijfheerenlanden, boringen en het aanleggen van pomputten ten behoeve van de grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                            <physdesc>
                              <extent>pak</extent>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907899">1455</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1972-002(1108)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d2e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Barendrecht, mogelijkheden van grondwaterwinning op langere termijn.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907900">1202</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/393(846)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d2f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bergambacht, infiltratie van rivierwater als gevolg van de grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1536, 2751</unitid>
                            <unittitle>Eiland van Dordrecht.</unittitle>
                            <unitdate calendar="gregorian" normal="1974/1980" era="ce">1974-1980</unitdate>
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                            <did>
                              <unitid identifier="63907902">1536</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-025(1161)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d31-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de kwaliteit van het grondwater,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907903">2751</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d32-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Notitie ten behoeve van de Projectgroep Winning Grondwater van het Gemeentelijk Energiebedrijf Dordrecht over de natuur- en zettingsschade ten gevolge van grondwaterwinning,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1082, 1379</unitid>
                            <unittitle>Goudse Waterleiding Maatschappij NV.</unittitle>
                            <unitdate calendar="gregorian" normal="1959/1971" era="ce">1959-1971</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907905">1082</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/190(709)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d34-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake het onderzoek naar de mogelijkheden tot zuivering van grondwater en de invloed van de resultaten van dit onderzoek op de keuze van een nieuwe waterwinplaats,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907906">1379</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/393(1071)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d35-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de gevolgen van de grondwaterwinning door het pompstation Bergambacht,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                            <unitid>div.nrs.</unitid>
                            <unittitle>Oostelijk IJsselmonde, grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907908">186</unitid>
                              <unitid audience="internal" type="obsolete">74-83/213</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d37-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
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                              <unitid identifier="63907909">1600</unitid>
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                              <unittitle>Winning van grondwater tussen Leiden en Bodegraven,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                            <unittitle>Zwijndrecht, gemeentewaterleidingbedrijf; nota inzake de te verwachten verlaging van de stijghoogte van het grondwater door wateronttrekking aan de bodem.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                              <unitid identifier="63907920">950</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/052(490)</unitid>
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                              <unittitle>Nota inzake een onderzoek naar de capaciteit van de waterwinplaatsen te St. Jansteen en Clinge (Kappelleburg),<unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
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                              <unittitle>Onderzoek naar de capaciteit van de waterwinplaatsen te St. Jansteen en Clinge,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                            <did>
                              <unitid identifier="63907922">997</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/052(628)</unitid>
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                              <unittitle>Modelonderzoek van de grondwaterbeweging en verwante vraagstukken bij de waterwinplaatsen te St. Jansteen, Clinge en in de Wildelanden,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                          <did>
                            <unitid identifier="63907923">1049</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/050(660)</unitid>
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                            <unittitle>Middelburg, gemeentewaterleiding; toelaatbare wateronttrekking aan het draineerkanaal van de waterwinplaats Oranjezon.</unittitle>
                            <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                          <did>
                            <unitid identifier="63907924">1468</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1968-007(973)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d46-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Middelduinen, advies met betrekking tot de uitbreiding van waterwinning door de Stichting Drinkwaterleiding Goeree en Overflakkee.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                        </c>
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                          <did>
                            <unitid identifier="63907925">887</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/050(454)</unitid>
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                            <unittitle>Oranjezon, mogelijkheden van vergroting van de capaciteit der waterwinplaats van de gemeente Middelburg.</unittitle>
                            <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                          <did>
                            <unitid identifier="63907926">961</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/039(597)</unitid>
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                            <unittitle>West-Schouwen, winning van grondwater in het gebied van de zandgronden ten behoeve van de watervoorziening van deze gronden.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                          <did>
                            <unitid identifier="63907927">570</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/052(133)</unitid>
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                            <unittitle>Zeeuwsch-Vlaamsche waterleiding, geprojecteerde waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
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                          <unittitle>Noord-Brabant</unittitle>
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                          <did>
                            <unitid identifier="63907930">866</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/255(542)</unitid>
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                            <unittitle>Kilwaterleiding, toekomstige waterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907931">1255</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/322(906)</unitid>
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                            <unittitle>Mogelijkheden van grondwaterwinning in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63907932">1298</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1967-003(956)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d4d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de mogelijkheden van grondwaterwinning in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                            <unitdate calendar="gregorian" normal="1936/1960" era="ce">1936-1960</unitdate>
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                            <did>
                              <unitid identifier="63907934">676</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(249)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d4f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de uitwerking van de plannen voor waterwinning,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907935">800</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(405)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d50-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de te verwachten daling van de grondwaterstand ten gevolge van de waterwinning door het te stichten pompstation Vessem,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907936">799</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(404)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d51-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de te verwachten daling van de grondwaterstand ten gevolge van de waterwinning in het te stichten pompstation Boxmeer,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907937">860</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(441)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d52-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de te verwachten daling van de grondwaterstand ten gevolge van de waterwinning door het te stichten pompstation Berghem,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63907938">1052</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(663)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d53-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verwachte daling van de grondwaterstand ten gevolge van de uitbreiding van de waterwinplaats te Boxmeer,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                            <did>
                              <unitid identifier="63907939">1117</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/085(751)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d54-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de berekening van de te verwachten afpompingen in de pompputten van de waterwinplaats,<unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                          <did>
                            <unitid identifier="63907940">935</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/302(582)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d55-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Acht, verlaging van de grondwaterstand onder invloed van de wateronttrekking in de waterwinplaats van de NV Philips Gloeilampenfabriek.</unittitle>
                            <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                            <unitid>1223, 1478</unitid>
                            <unittitle>Brabantse Wal.</unittitle>
                            <unitdate calendar="gregorian" normal="1964/1968" era="ce">1964-1968</unitdate>
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                            <did>
                              <unitid identifier="63907942">1223</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/003(869)</unitid>
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                              <unittitle>Voorlopige conclusies inzake de mogelijkheden van grondwaterwinning,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                            <did>
                              <unitid identifier="63907944">1478</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/003(978)</unitid>
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                              <unittitle>Invloed van de grondwaterwinning op de waterhuishouding van het hoge gebied van de aangrenzende polders,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                          <did>
                            <unitid identifier="63907945">1387</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/011(1075)</unitid>
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                            <unittitle>Princebosch, gevolgen van grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                            <unitid identifier="63907946">189</unitid>
                            <unitid audience="internal" type="obsolete">74-83/214</unitid>
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                            <unittitle>Roosteren, gemeente; winning van oevergrondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
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                          <did>
                            <unitid identifier="63907947">1357</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/481(1048)</unitid>
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                            <unittitle>Uden, mogelijkheid van grondwaterwinning op het industrieterrein.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            <unitid identifier="63907948">191</unitid>
                            <unitid audience="internal" type="obsolete">74-83/217</unitid>
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                            <unittitle>Westelijk Noord-Brabant, grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                            <physdesc>
                              <extent>pak</extent>
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                        <did>
                          <unitid type="series_code">1.8.02.11</unitid>
                          <unittitle>Limburg</unittitle>
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                            <unittitle>NV Waterleidingmaatschappij Midden- en Noord-Limburg.</unittitle>
                            <unitdate calendar="gregorian" normal="1950/1956" era="ce">1950-1956</unitdate>
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                            <did>
                              <unitid identifier="63907951">924</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/108(479)</unitid>
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                              <unittitle>Nota inzake de keuze van een waterwinplaats ten behoeve van de groep Echt,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                            <did>
                              <unitid identifier="63907952">1001</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/108(632)</unitid>
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                              <unittitle>Nota inzake de te verwachten daling van de grondwaterstand onder invloed van de waterwinning te Beegden,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                          <did>
                            <unitid identifier="63907953">192</unitid>
                            <unitid audience="internal" type="obsolete">74-83/219</unitid>
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                            <unittitle>Helmond, gemeente; uitbreiding van de grondwaterwinning bij het pompstation Bakelsedijk.</unittitle>
                            <unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
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                          <did>
                            <unitid identifier="63907954">3273</unitid>
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                            <unittitle>Maastricht, het samen met de Rijks Geologische Dienst onderzoeken van de mogelijkheden van uitbreiding van de waterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1969/1972" era="ce">1969-1972</unitdate>
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                          <did>
                            <unitid identifier="63907955">1362</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/480(1053)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d63-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Venray, gemeente; mogelijkheid van grondwaterwinning op het industrieterrein ten zuiden van Oostrum.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                          <did>
                            <unitid identifier="63907956">861</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/220(442)</unitid>
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                            <unittitle>Zuid-Limburg, gevolgen van het graven van een dal in het plateau van Margraten voor de waterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                        <did>
                          <unitid type="series_code">1.8.02.12</unitid>
                          <unittitle>IJsselmeerpolders (Flevoland)</unittitle>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>985, 1146</unitid>
                            <unittitle>Oostelijk-Flevoland.</unittitle>
                            <unitdate calendar="gregorian" normal="1957/1961" era="ce">1957-1961</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63907960">985</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1957-006(668)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d67-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Mogelijke grondwaterwinning,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63907961">1146</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/349(785)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d68-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de gevolgen van de onttrekking van grondwater aan de in te richten winplaats Bremerberg,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.8.03</unitid>
                        <unittitle>REGIO'S</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63907963">2971</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d6a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Fikkersdries, onderzoek naar mogelijkheden en gevolgen voor de omgeving van grondwaterwinning bij pompstation  (1972 - 1977).</unittitle>
                          <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907964">1684</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1975-7(18)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d6b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gelderse Vallei, het regionaal hydrologisch onderzoek van een eerste indicatieve benadering van de gevolgen van grondwaterwinning door ir. C. van den Akker en ir. C.R. Meinardi.</unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907965">1760</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-003(1353)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d6c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lek, onderzoek naar invloeden op de omgeving van oevergrondwaterwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63907966">1605</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(1023)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5d6d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuid-Nederland, grondwaterwinning.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                        </did>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">74</unitid>
                    <unittitle>Het adviseren inzake bodemsanering en bodemsaneringstechnieken bij het maken en uitvoeren van bodemsaneringsplannen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63908245">3089</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e6d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Procedure bij de behandeling van onderzoeksvoorstellen voor het RID en het Rijksinstituut voor de Volksgezondheid (RIV) in verband met bodemverontreinigingsincidenten en bodemsanering alsmede adviezen inzake bodemsanering.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63908246">2710</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e6e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het in opdracht van het Ministerie van Volkshuisvesting, Ruimtelijke Ordening en Milieubeheer ontwikkelen van een Milieuhygiënische beoordelingsmethodiek voor bodemsaneringsgevallen.</unittitle>
                      <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63908247">1407</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1983-008(1410)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e6f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>De ontwikkeling van een screeningsmethode voor de bodemsanering van het Griftpark; Meetresultaten aan schone en verontreinigde grond opgesteld door M.J. 't Hart, E. de Greef en G.J. Piet.</unittitle>
                      <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63908248">3127</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e70-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Interimrapport meerjarenplanning bodemsanering opgesteld om inzicht te verkrijgen in het toekomstige verloop van de bodemsaneringsoperatie door de projectgroep Meerjarenplanning.</unittitle>
                      <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">77</unitid>
                    <unittitle>Het adviseren van de hoofden der betrokken departementen van Algemeen Bestuur in verschillende gevallen waarin ten gevolge van de aanleg van waterleidingen, waterstaatswerken en dergelijke invloed kan worden uitgeoefend<lb></lb>op de grondwaterstand.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: (Permanente) Commissie inzake de Wateronttrekking aan de Bodem (Cowabo)</corpname>
                      </item>
                      <item>Bron: Jaarverslag RID 1934 'Drinkwatervoorziening in Nederland 1913-1938', p. 215.<lb></lb>Jaarverslag 1962 van de Commissie inzake Wateronttrekking aan de Bodem.
</item>
                      <item>Product: Rapporten, jaarverslagen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Commissie inzake wateronttrekking aan de bodem(Cowabo).</unittitle>
                      <unitdate calendar="gregorian" normal="1926/1973" era="ce">1926-1973</unitdate>
                    </did>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2993-3005</unitid>
                        <unittitle>Geografische objecten.<unitdate calendar="gregorian" normal="1926/1969" era="ce">1926-1969</unitdate>
                        </unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3004-3005</unitid>
                          <unittitle>Voerendaal.<unitdate calendar="gregorian" normal="1934/1943" era="ce">1934-1943</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63908281">3005</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e90-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1936 - 1943<unitdate calendar="gregorian" normal="1936/1943" era="ce">1936-1943</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908282">3004</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e91-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1934 - 1935<unitdate calendar="gregorian" normal="1934/1935" era="ce">1934-1935</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2999-3003</unitid>
                          <unittitle>Veluwe.<unitdate calendar="gregorian" normal="1926/1929" era="ce">1926-1929</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63908285">3003</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e93-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1929<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908286">3002</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e94-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1928 apr - dec<unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908287">3001</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e95-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1928 jan - mrt<unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908288">3000</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e96-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1927 juli - dec<unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908289">2999</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e97-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1926 - 1927 juni<unitdate calendar="gregorian" normal="1926/1927" era="ce">1926-1927</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908290">2996</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e98-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Oost-Gelderland,<unitdate calendar="gregorian" normal="1936/1960" era="ce">1936-1960</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908291">2998</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e99-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Obbicht/Papenhoven - Terheyden,<unitdate calendar="gregorian" normal="1938/1969" era="ce">1938-1969</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908292">2995</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e9a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noord-Brabant,<unitdate calendar="gregorian" normal="1936/1951" era="ce">1936-1951</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908293">2997</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e9b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Loosdrecht,<unitdate calendar="gregorian" normal="1929/1955" era="ce">1929-1955</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908294">2994</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e9c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Laren - Noordwijkerhout,<unitdate calendar="gregorian" normal="1934/1962" era="ce">1934-1962</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908295">2993</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e9d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kennemerland,<unitdate calendar="gregorian" normal="1934/1958" era="ce">1934-1958</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2041, 2917-2922</unitid>
                        <unittitle>Jaarverslagen en correspondentie.<unitdate calendar="gregorian" normal="1933/1971" era="ce">1933-1971</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908297">2919</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e9f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1935/1936" era="ce">1935-1936</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908298">2917</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1940/1944" era="ce">1940-1944</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908299">2918</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1945/1953" era="ce">1945-1953</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908300">2921</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1954/1957" era="ce">1954-1957</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908301">2922</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1958/1971" era="ce">1958-1971</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908303">2920</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Correspondentie,<unitdate calendar="gregorian" normal="1933/1934" era="ce">1933-1934</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908304">2041</unitid>
                          <unitid audience="internal" type="obsolete">CA2/34-68(1)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Notulen van vergaderingen,<unitdate calendar="gregorian" normal="1934/1968" era="ce">1934-1968</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Beantwoording van vragen rondom grondwateronttrekking.<unitdate calendar="gregorian" normal="1933/1973" era="ce">1933-1973</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908306">2908</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>IJmuiden hoogovens,<unitdate calendar="gregorian" normal="1948/1972" era="ce">1948-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908307">2910</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>IJmuiden - Zwijndrecht,<unitdate calendar="gregorian" normal="1949/1970" era="ce">1949-1970</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908308">2923</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ea9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amsterdam - Alkmaar,<unitdate calendar="gregorian" normal="1947/1962" era="ce">1947-1962</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908309">2924</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eaa-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Apeldoorn,<unitdate calendar="gregorian" normal="1955/1972" era="ce">1955-1972</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908310">2864</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eab-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Barneveld,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Bennebroek.<unitdate calendar="gregorian" normal="1934/1950" era="ce">1934-1950</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63908312">2865</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ead-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1934/1935" era="ce">1934-1935</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908313">2914</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eae-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908314">2915</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eaf-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908315">2916</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1938/1940" era="ce">1938-1940</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908316">2904</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1943/1950" era="ce">1943-1950</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908317">2906</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bergen,<unitdate calendar="gregorian" normal="1950/1959" era="ce">1950-1959</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908318">2909</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bergen op Zoom - Buren,<unitdate calendar="gregorian" normal="1937/1971" era="ce">1937-1971</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908319">2911</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Castricum - Heemskerk,<unitdate calendar="gregorian" normal="1939/1956" era="ce">1939-1956</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908321">2868</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Venray - Vlijmen,<unitdate calendar="gregorian" normal="1936/1972" era="ce">1936-1972</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908322">2907</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wassenaar - IJmond,<unitdate calendar="gregorian" normal="1933/1973" era="ce">1933-1973</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908323">2792</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Onderzoek Acht,<unitdate calendar="gregorian" normal="1939/1954" era="ce">1939-1954</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908324">809</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/211(365)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Onderzoek te Bakkum,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908325">2903</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eb9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Wettelijke regelingen, instructie CoWaBo en financiële regeling,<unitdate calendar="gregorian" normal="1949/1961" era="ce">1949-1961</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908326">1131</unitid>
                        <unitid audience="internal" type="obsolete">R09-80/383(765)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eba-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Het kwantitatieve en kwalitatieve beheer van het grondwater in Nederland,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908327">2905</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ebb-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Grondwaterverordeningen per provincie,<unitdate calendar="gregorian" normal="1964/1972" era="ce">1964-1972</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63908328">2802</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ebc-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>De opstelling van een wettelijke regeling inzake het onttrekken van water aan de bodem ten behoeve van de openbare drinkwatervoorziening en de wijziging van de Grondwaterwet Waterleidingbedrijven.</unittitle>
                      <unitdate calendar="gregorian" normal="1951/1969" era="ce">1951-1969</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">79</unitid>
                    <unittitle>Het adviseren van de minister omtrent de volgende vragen:<lb></lb>- In hoeverre verdient het aanbeveling dat door de regering de oprichting wordt bevorderd van een fabriek voor de vervaardiging van buizen voor gas- en waterleiding.<lb></lb>- Welke materialen moeten het meest geschikt worden geacht voor de vervaardiging in Nederland.<lb></lb>- Op welke wijze zou eventueel de regering de oprichting van de fabriek kunnen bevorderen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie inzake de Vervaardiging van Buizen voor Gas- en Waterleiding</corpname>
                      </item>
                      <item>Product: 'Rapport der Commissie inzake de Vervaardiging van Buizen voor Gasen Waterleiding in Nederland..
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2039-2040</unitid>
                      <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1934/1935" era="ce">1934-1935</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63908336">2039</unitid>
                        <unitid audience="internal" type="obsolete">CA2/34-35(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ec4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908337">2040</unitid>
                        <unitid audience="internal" type="obsolete">CA2/34-35(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ec5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63908338">632</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/103(219)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ec6-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Rapport inzake de vervaardiging van buizen voor gas- en waterleiding.</unittitle>
                      <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">80</unitid>
                    <unittitle>Het adviseren en rapporteren over de drinkwatervoorziening aan de directeur van het Rijksbureau voor Drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Chemisch-Hydrologische Strumacommissie</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Adviesrapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>1770-1775</unitid>
                      <unittitle>Vergaderstukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1923/1932" era="ce">1923-1932</unitdate>
                    </did>
                    <odd>
                      <p>Vergadering 8 niet aanwezig</p>
                    </odd>
                    <c level="file">
                      <did>
                        <unitid identifier="63908259">1770</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e7b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>1e - 3e vergadering,<unitdate calendar="gregorian" normal="1923/1926" era="ce">1923-1926</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908260">1771</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e7c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>4e en 5e vergadering,<unitdate calendar="gregorian" normal="1926/1927" era="ce">1926-1927</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908261">1772</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e7d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>6e en 7e vergadering,<unitdate calendar="gregorian" normal="1927/1928" era="ce">1927-1928</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908262">1773</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(3)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e7e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>9e en 10e vergadering,<unitdate calendar="gregorian" normal="1928/1929" era="ce">1928-1929</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908264">1774</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e7f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>11e vergadering,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908265">1775</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e80-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>12e vergadering,<unitdate calendar="gregorian" normal="1931/1932" era="ce">1931-1932</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                      <unitdate calendar="gregorian" normal="1925/1929" era="ce">1925-1929</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63908267">2068</unitid>
                        <unitid audience="internal" type="obsolete">CA2/13-83(70)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e82-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1925/1927" era="ce">1925-1927</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908268">2073</unitid>
                        <unitid audience="internal" type="obsolete">CA2/13-83(71)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e83-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908269">2075</unitid>
                        <unitid audience="internal" type="obsolete">CA2/13-83(72)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e84-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63908270">606</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/023(156)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5e85-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Nota inzake het jodiumgehalte van aardlagen, afkomstig van diepboringen, en van hieraan onttrokken watermonsters.</unittitle>
                      <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">81-154</unitid>
                    <unittitle>Het adviseren en rapporteren over de drinkwatervoorziening aan de directeur van het Rijksinstituut voor Drinkwatervoorziening</unittitle>
                  </did>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">81</unitid>
                      <unittitle>Koperen Buizen Commissie</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Koperen Buizen Commissie</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1776-1785</unitid>
                        <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1927/1934" era="ce">1927-1934</unitdate>
                      </did>
                      <odd>
                        <p>Met hiaten</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63908350">1776</unitid>
                          <unitid audience="internal" type="obsolete">CA23-83(6)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-079,<unitdate calendar="gregorian" normal="1927/1928" era="ce">1927-1928</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908351">1777</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(7)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>080-099,<unitdate calendar="gregorian" normal="1928/1929" era="ce">1928-1929</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908352">1778</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(8)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>100-153, 0-084,<unitdate calendar="gregorian" normal="1929/1930" era="ce">1929-1930</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908353">1779</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(9)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>050-085,<unitdate calendar="gregorian" normal="1930/1931" era="ce">1930-1931</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908354">1780</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(10)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>076-112,<unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908355">1781</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(11)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-076,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908356">1782</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>077-160,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908357">1783</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83 (13)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>162-190,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908358">1784</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(14)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ed9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>191-228,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908359">1785</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(15)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eda-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-127,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1786-1787</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1928/1940" era="ce">1928-1940</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908361">1787</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(17)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5edc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1928/1934" era="ce">1928-1934</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908363">1786</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(16)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5edd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1935/1940" era="ce">1935-1940</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">82</unitid>
                      <unittitle>Commissie Smaak en Reuk Rivierwater</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Smaak en Reuk Rivierwater</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1788-1798</unitid>
                        <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1929/1938" era="ce">1929-1938</unitdate>
                      </did>
                      <odd>
                        <p>Met hiaten</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63908374">1788</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(18)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ee8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-030,<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908375">1789</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(19)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ee9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-070,<unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908376">1790</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(22)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eea-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>002-020,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908377">1791</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(23)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eeb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>021-030,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908378">1792</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(24)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eec-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>031-063,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908379">1793</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(25)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eed-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-030,<unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908380">1794</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(29)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eee-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>031-118,<unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908381">1795</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(33)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eef-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-078,<unitdate calendar="gregorian" normal="1933" era="ce">1933</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908382">1796</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(35)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ef0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-068,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908383">1797</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(37)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ef1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001-053,<unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908384">1798</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(38)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ef2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1-2(1936), 1(1938),<unitdate calendar="gregorian" normal="1936/1938" era="ce">1936-1938</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">84</unitid>
                      <unittitle>Internationale Geodetische en Geophysische Unie</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Internationale Geodetische en Geophysische Unie</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1804-1810</unitid>
                        <unittitle>Vergaderstukken van de sectie voor Wetenschappelijke Hydrologie.</unittitle>
                        <unitdate calendar="gregorian" normal="1933/1976" era="ce">1933-1976</unitdate>
                      </did>
                      <odd>
                        <p>Met hiaten</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63908395">1804</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(44)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5efd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1933/1938" era="ce">1933-1938</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908397">1805</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(45)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5efe-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1939/1946" era="ce">1939-1946</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908398">1806</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(46)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5eff-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1947/1954" era="ce">1947-1954</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908399">1807</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(47)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f00-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1960/1962" era="ce">1960-1962</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908400">1808</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(48)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f01-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1963/1969" era="ce">1963-1969</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908401">1809</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(49)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f02-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1970/1972" era="ce">1970-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908402">1810</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(50)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f03-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">85</unitid>
                      <unittitle>Koperen Grondleiding Commssie</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Koperen Grondleiding Commissie</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1811-1814</unitid>
                        <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1935/1942" era="ce">1935-1942</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908411">1811</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(51)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f0c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1935/1940" era="ce">1935-1940</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908412">1812</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(52)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f0d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1941 jan.- mei<unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908413">1813</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(53)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f0e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1941 juni - okt.<unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908414">1814</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(54)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f0f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1941 nov. - 1942 aug.<unitdate calendar="gregorian" normal="1941/1942" era="ce">1941-1942</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                        <odd>
                          <p>Inclusief rapport</p>
                        </odd>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">88</unitid>
                      <unittitle>Commissie Algemene Voorschriften voor het Leggen van Buisleidingen en de Aankoop van Materialen</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Algemene Voorschriften voor het Leggen van Buisleidingen en de Aankoop van Materialen</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1815-1817</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1940/1947" era="ce">1940-1947</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908426">1815</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(55)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f1a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1940/1941" era="ce">1940-1941</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908427">1816</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(55)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f1b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1942/1943" era="ce">1942-1943</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908428">1817</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(55)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f1c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1944/1947" era="ce">1944-1947</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                        <odd>
                          <p>Inclusief rapport</p>
                        </odd>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">96</unitid>
                      <unittitle>Commissie Leermiddelen Vakopleiding, voorheen Commissie Samenstelling Handboek voor den Waterfilter (1933-1939) en Commissie Handboek Waterleidingvak (1939-1949).</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Handboek voor het Waterleidingvak (CHW)</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1799-1803</unitid>
                        <unittitle>Vergaderstukken</unittitle>
                        <unitdate calendar="gregorian" normal="1933/1970" era="ce">1933-1970</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908439">1799</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(39)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f27-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1933/1943" era="ce">1933-1943</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908440">1800</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(40)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f28-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1944/1948" era="ce">1944-1948</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908441">1801</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(41)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f29-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1949/1951" era="ce">1949-1951</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908442">1802</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(42)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f2a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1952/1953" era="ce">1952-1953</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908443">1803</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(43)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f2b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1954/1970" era="ce">1954-1970</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">98</unitid>
                      <unittitle>Commissie inzake Materiaalvoorziening voor Waterleidingbedrijven (CMW)</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie inzake Materiaalvoorziening voor Waterleidingbedrijven (CMW)</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2779-2780</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1940/1952" era="ce">1940-1952</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908453">2779</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f34-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1940/1942" era="ce">1940-1942</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908454">2780</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f35-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1943/1952" era="ce">1943-1952</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                        <odd>
                          <p>Inclusief rapport</p>
                        </odd>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">100</unitid>
                      <unittitle>Commissie Zwembaden TNO</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Zwembaden TNO</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2821, 2824</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1943/1949" era="ce">1943-1949</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908465">2824</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f40-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1943/1944" era="ce">1943-1944</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908466">2821</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f41-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1945/1949" era="ce">1945-1949</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">101</unitid>
                      <unittitle>Hydrologisch Colloquium</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Hydrologisch Colloquium</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1818-1819, 2893</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1942/1973" era="ce">1942-1973</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908475">1818</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(56)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f4a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1942/1950" era="ce">1942-1950</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908477">1819</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(57)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f4b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1951/1958" era="ce">1951-1958</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908478">2893</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f4c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1966/1973" era="ce">1966-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">102</unitid>
                      <unittitle>Commissie tot Onderzoek van het Bezinkingsvraagstuk</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie tot Onderzoek van het Bezinkingsvraagstuk</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1820-1822</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1943/1948" era="ce">1943-1948</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908487">1820</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(58)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f55-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908488">1821</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(58)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f56-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908489">1822</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(59)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f57-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1945/1948" era="ce">1945-1948</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908490">1823</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(60)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f58-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1943/1948" era="ce">1943-1948</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">104</unitid>
                      <unittitle>Commissie Infiltratie</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Infiltratie</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908498">1824</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(61)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f60-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1951/1962" era="ce">1951-1962</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">105</unitid>
                      <unittitle>Contactcommissie Geo-Hydrologisch Onderzoek"</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Contactcommissie Geo-Hydrologisch Onderzoek</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908508">1825</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(62)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f68-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Behandeling van diverse vraagstukken met betrekking tot de realisering van geohydrologische kaarten.</unittitle>
                        <unitdate calendar="gregorian" normal="1957/1966" era="ce">1957-1966</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">106</unitid>
                      <unittitle>Werkgroep Technische Voorlichting Fluoridering</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Technische Voorlichting Fluoridering</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1826-1835, 1881</unitid>
                        <unittitle>Het geven van voorlichting over de fluoridering van drinkwater aan waterleidingbedrijven in diverse gemeenten en gebieden.</unittitle>
                        <unitdate calendar="gregorian" normal="1960/1973" era="ce">1960-1973</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908518">1826</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f71-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Almelo,<unitdate calendar="gregorian" normal="1960/1973" era="ce">1960-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908519">1827</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f72-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Amersfoort - Arnhem,<unitdate calendar="gregorian" normal="1961/1972" era="ce">1961-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908520">1828</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f73-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Assen - Doorn,<unitdate calendar="gregorian" normal="1960/1972" era="ce">1960-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908521">1829</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f74-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Dordrecht - Oostelijk Flevoland,<unitdate calendar="gregorian" normal="1962/1972" era="ce">1962-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908522">1830</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f75-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gelderland,<unitdate calendar="gregorian" normal="1960/1972" era="ce">1960-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908523">1831</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f76-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Goeree - 's-Gravenhage,<unitdate calendar="gregorian" normal="1961/1972" era="ce">1961-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908524">1881</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f77-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Haarlem-Maastricht,<unitdate calendar="gregorian" normal="1961/1972" era="ce">1961-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908526">1832</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f78-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Meppel - Nijmegen,<unitdate calendar="gregorian" normal="1961/1972" era="ce">1961-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908527">1833</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f79-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noord-Holland - Roosendaal,<unitdate calendar="gregorian" normal="1961/1972" era="ce">1961-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908529">1834</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f7a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rotterdam - Velsen,<unitdate calendar="gregorian" normal="1961/1968" era="ce">1961-1968</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908530">1835</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f7b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Veluwe - Zwijndrecht,<unitdate calendar="gregorian" normal="1960/1972" era="ce">1960-1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">107</unitid>
                      <unittitle>Stichting tot Bevordering van het Bad- en Zwemwezen in Nederland</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Stichting tot Bevordering van het Bad- en Zwemwezen in Nederland</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1836-1837</unitid>
                        <unittitle>Vergaderstukken en rapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1962/1970" era="ce">1962-1970</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908539">1836</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(74)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f84-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1962/1965" era="ce">1962-1965</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908540">1837</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(75)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f85-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1966/1970" era="ce">1966-1970</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">109</unitid>
                      <unittitle>Technische Werkgroep Infiltratie Veluwe</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Technische Werkgroep Infiltratie Veluwe</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1838-1842, 2319</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1969/1978" era="ce">1969-1978</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908550">1838</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(76)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f8e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1969/1971" era="ce">1969-1971</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908551">1839</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(77)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f8f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
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                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908552">1840</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(79)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f90-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908553">1841</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(80)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f91-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908554">1842</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(81)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f92-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908555">2319</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(82)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f93-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1555, 1843-1847</unitid>
                        <unittitle>Ad-hoc Werkgroepen; vergaderstukken en rapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1978" era="ce">1973-1978</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908558">1844</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(84)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f95-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Constructies,<unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908559">1845</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(85)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f96-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Geochemie,<unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908560">1843</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(83)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f97-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Geohydrologie,<unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908561">1846</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(86)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f98-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuivering,<unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908562">1555</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/510(1187)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f99-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport geochemisch gedrag van gezuiverd Rijnwater bij infiltratie in de Veluwe van de ad-hoc Werkgroep Geochemie,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908563">1847</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(87)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5f9a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ecologie,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">110</unitid>
                      <unittitle>Werkgroep Organisatie Waterbeheer</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Organisatie Waterbeheer</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1848-1849</unitid>
                        <unittitle>Vergaderstukken en eindrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908573">1849</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(88)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fa3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908574">1848</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(89)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fa4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">111</unitid>
                      <unittitle>Commissie Proefinstallatie Infiltratie</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Proefinstallatie Infiltratie</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1850-1853</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1971/1977" era="ce">1971-1977</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908584">1850</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(91)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fad-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908585">1851</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(92)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fae-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908586">1852</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(93)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5faf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908587">1853</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(94)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fb0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1854-1855</unitid>
                        <unittitle>Rapport betreffende de infiltratie van voorgezuiverd Rijnwater in Veluwezand, met bijlagen en geleidebrief.</unittitle>
                        <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908590">1854</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(96)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fb2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908591">1855</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(96)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fb3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bijlage,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908593">1856</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(97)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fb4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport inzake de invloed van licht bij infiltratie van Rijnwater in duinzand, met bijlagen.</unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908594">1857</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(98)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fb5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport inzake de voorlopige resultaten van de infiltratieproeven met de Veluwe ketels, met bijlagen.</unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">112</unitid>
                      <unittitle>Stuurgroep Coördinatie Geohydrologisch Onderzoek</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Stuurgroep Coördinatie Geohydrologisch Onderzoek</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1858-1864</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1972/1982" era="ce">1972-1982</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908605">1858</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(99)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fbe-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908606">1859</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(100)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fbf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908607">1860</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(101)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908608">1861</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(102)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908609">1862</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(102)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908610">1863</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(103)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908611">1864</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(104)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Coördinatiegroepen ingesteld door de Stuurgroep Coördinatie Geohydrologisch Onderzoek, later geheten Landelijke Coördinatiecommissie Geohydrologisch Onderzoek.</unittitle>
                        <unitdate calendar="gregorian" normal="1972/1983" era="ce">1972-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908613">2819</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Midden-Brabant,<unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908614">2812</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Overijsselse Vecht,<unitdate calendar="gregorian" normal="1972/1980" era="ce">1972-1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908615">2818</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fc8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Grote Rivierengebied,<unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2763-2764</unitid>
                          <unittitle>Overijssel.<unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63908617">2763</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fca-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908618">2764</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fcb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908619">2765</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fcc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Utrecht; algemeen,<unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908621">2817</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fcd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Utrecht; vergaderstukken,<unitdate calendar="gregorian" normal="1973/1983" era="ce">1973-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908622">2834</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Groningen,<unitdate calendar="gregorian" normal="1977/1981" era="ce">1977-1981</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908624">2810</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fcf-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Friesland en haar adviesgroep,<unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908625">2811</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Midden- en Oost-Brabant,<unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908627">2820</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>IJsselmeergebied,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908628">2813</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Limburg,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908630">2816</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>West-Noord-Brabant,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908631">2823</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zuid-Holland,<unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908633">2761</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gelderland,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908634">2762</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Noord-Holland,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908636">2760</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zeeland,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908637">1866</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(105)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Overleg met de Vereniging van Exploitanten van Waterleidingbedrijven in Nederland (VEWIN).</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908638">1867</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(106)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fd9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Overleg met de directies van de diensten die zijn betrokken bij de coördinatie van het geohydrologisch onderzoek.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1982" era="ce">1975-1982</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908639">1865</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(104)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fda-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Totstandkoming van de nota inzake samenwerking bij het regionaal hydrologisch onderzoek ten behoeve van het grondwaterbeheer.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">113</unitid>
                      <unittitle>Contactgroep Waternormen</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Contactgroep Waternormen</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1868-1869</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908648">1868</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(107)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fe3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908649">1869</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(107)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fe4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">114</unitid>
                      <unittitle>Commissie Voorraadvorming en Zuivering van Oppervlaktewater</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Voorraadvorming en Zuivering van Oppervlaktewater</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908657">1871</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(109)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fec-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Instelling, samenstelling en werkwijze.</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908658">1870</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(108)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fed-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908659">1616</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1977-007(1239)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5fee-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport Voorraadvorming en Zuivering van Oppervlaktewater.</unittitle>
                        <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">115</unitid>
                      <unittitle>Commissie Bescherming Waterwingebieden</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Bescherming Waterwingebieden</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908670">1872</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(110,111)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ff6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Algemeen.</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1982" era="ce">1973-1982</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908671">1873</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(112)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ff7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908672">1874</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(113)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ff8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1974/1982" era="ce">1974-1982</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908673">1875</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(114)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-5ff9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1982" era="ce">1977-1982</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">116</unitid>
                      <unittitle>Commissie Waterverbruik</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Waterverbruik</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908681">2966</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6001-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderverslagen.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1981" era="ce">1975-1981</unitdate>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2835-2836</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1981" era="ce">1975-1981</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908684">2835</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6003-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908685">2836</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6004-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1977/1981" era="ce">1977-1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908687">1889</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(119)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6005-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Interimverslagen.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908688">1877</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(115)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6006-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Eindrapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908689">1876</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(115)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6007-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Behandeling van vraagstukken omtrent de openbare watervoorziening.</unittitle>
                        <unitdate calendar="gregorian" normal="1973/1982" era="ce">1973-1982</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908690">2840</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6008-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Advies voor een indeling in categorieën waterverbruikers met het oog op registratie van leveranties door waterleidingbedrijven.</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1878, 1886-1888</unitid>
                        <unittitle>Werkgroepen.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908692">1886</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(117)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-600a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Industrieel Waterverbruik,<unitdate calendar="gregorian" normal="1975/1979" era="ce">1975-1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908693">1878</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(116)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-600b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Werkgroep Commercieel-, Openbaar-, Agrarisch- en Recreatief Waterverbruik,<unitdate calendar="gregorian" normal="1975/1979" era="ce">1975-1979</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1887-1888</unitid>
                          <unittitle>Huishoudelijk Watergebruik.<unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63908695">1887</unitid>
                            <unitid audience="internal" type="obsolete">CA/23-83(118)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-600d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908696">1888</unitid>
                            <unitid audience="internal" type="obsolete">CA/23-83(118)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-600e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">117</unitid>
                      <unittitle>Werkgroep Classificatie Sedimenten</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Classificatie Sedimenten</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908704">1890</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(120)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6016-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1974/1977" era="ce">1974-1977</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">118</unitid>
                      <unittitle>Adviesgroep Standaardisatie Geohydrologische Archieven</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Adviesgroep Standaardisatie Geohydrologische Archieven</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908713">1891</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(121)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-601e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en eindrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">119</unitid>
                      <unittitle>Werkgroep Modelbouw</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Modelbouw</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908721">1892</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(122)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6026-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">120</unitid>
                      <unittitle>Werkgroep Onttrekking Oppervlaktewater Veluwe</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Onttrekking Oppervlaktewater Veluwe</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908729">1879</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(123)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-602e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1978" era="ce">1975-1978</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">121</unitid>
                      <unittitle>Werkgroep Mathematisch Model Basisplannen</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Mathematisch Model Basisplannen</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908737">1880</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6036-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">123</unitid>
                      <unittitle>Projectgroep Technologie</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Projectgroep Technologie</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1895-1896</unitid>
                        <unittitle>Onderzoek naar zuiveringstechnieken in het kader van hergebruik van afvalwater.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908747">1895</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(129)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-603f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908748">1896</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(130)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6040-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908749">1897</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(131)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6041-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Werkgroep Biologische Stikstofeliminatie.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908750">1898</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(132,133)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6042-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Werkgroep Fysisch-Chemische Zuivering.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1983" era="ce">1975-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">126</unitid>
                      <unittitle>TNO Ad-hoc Groep Grondwatermodellen en Computerprogrammatuur</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: TNO Ad-hoc Groep Grondwatermodellen en Computerprogrammatuur</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908758">1899</unitid>
                        <unitid audience="internal" type="obsolete">CA23-83(134)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-604a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">127</unitid>
                      <unittitle>Studiegroep Spaarbekken Zeeland</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Studiegroep Spaarbekken Zeeland</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908766">1900</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(135)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6052-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">128</unitid>
                      <unittitle>Overleggroep Onderzoek Waterwinning Duingebieden</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Overleggroep Onderzoek Waterwinning Duingebieden</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908775">1901</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(136)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-605a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">129</unitid>
                      <unittitle>Begeleidingscommissie Planktonbeheersing in Bekkens</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Begeleidingscommissie Planktonbeheersing in Bekkens</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908783">1902</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(138,139)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6062-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1981" era="ce">1976-1981</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908784">1903</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(137)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6063-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Onderzoeksrapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908785">1904</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(137,138)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6064-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Adviesrapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">130</unitid>
                      <unittitle>Begeleidingscommissie van het Onderzoek Gezondheidsaspecten Centrale Ontharding Leidingwater</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Begeleidingscommissie van het Onderzoek Gezondheidsaspecten Centrale Ontharding Leidingwater</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Onderzoek naar de relatie tussen de minerale samenstelling van drinkwater en de volksgezondheid.</unittitle>
                        <unitdate calendar="gregorian" normal="1975/1982" era="ce">1975-1982</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908795">1882</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(125)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-606d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908796">1883</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(125)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-606e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908797">1884</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(126)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-606f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908798">1885</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(127)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6070-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908799">1893</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(128)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6071-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908800">1894</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(128)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6072-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                        <odd>
                          <p>Eindrapport</p>
                        </odd>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>1905-1906</unitid>
                          <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1976/1982" era="ce">1976-1982</unitdate>
                          </unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63908806">1905</unitid>
                            <unitid audience="internal" type="obsolete">CA/23-83(140)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6076-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63908807">1906</unitid>
                            <unitid audience="internal" type="obsolete">CA/23-83(141)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6077-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">131</unitid>
                      <unittitle>Werkgroep Spaarbekken Zuidelijk Flevoland</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Spaarbekken Zuidelijk Flevoland</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908815">1907</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(142)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-607f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">132</unitid>
                      <unittitle>Departementale Werkgroep Voorbereiding Structuurschema</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Departementale Werkgroep Voorbereiding Structuurschema</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908823">1908</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(143)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6087-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">133</unitid>
                      <unittitle>Begeleidingscommissie van het Project Grondwaterverontreiniging</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Begeleidingscommissie van het Project Grondwaterverontreiniging</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908834">1909</unitid>
                        <unitid audience="internal" type="obsolete">CA23-83(144)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-608f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">134</unitid>
                      <unittitle>Programmacommissie Regenwatermeetnet</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Programmacommissie Regenwatermeetnet</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908842">1910</unitid>
                        <unitid audience="internal" type="obsolete">ca/23-83(145)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6097-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1980" era="ce">1977-1980</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">135</unitid>
                      <unittitle>Werkgroep Drinkwateronttrekking Haringvliet</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Drinkwateronttrekking Haringvliet</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908850">1911</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(146)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-609f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1977/1981" era="ce">1977-1981</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">136</unitid>
                      <unittitle>Begeleidingscommissie voor de Infiltratie en Winning door de Leidse Duinwater Maatschappij</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Begeleidingscommissie voor de Infiltratie en Winning door de Leidse Duinwater Maatschappij</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908858">1912</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(147)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60a7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">137</unitid>
                      <unittitle>Werkgroep en Begeleidingcommissie van het Onderzoek Proefopstelling Integrale Afvalwater Afvoerplannen</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep en Begeleidingcommissie van het Onderzoek Proefopstelling Integrale Afvalwater Afvoerplannen</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908866">1913</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(148)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60af-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">141</unitid>
                      <unittitle>Contactgroep Grondwatermodellen CHO-TNO</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Contactgroep Grondwatermodellen CHO-TNO</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908876">1928</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(160)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60b7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Behandeling van aangelegenheden met betrekking tot de bevordering van samenwerking bij de ontwikkeling en toepassing van grondwatermodellen.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1926-1927</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908880">1926</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(160)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60b9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908881">1927</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(159)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60ba-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908882">1929</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(161)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60bb-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Werkgroep Ontwerp Enquête Formulieren.</unittitle>
                        <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908883">2455</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(162)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60bc-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Taakgroep van de Contactgroep Grondwatermodellen CHO-TNO.</unittitle>
                        <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">138</unitid>
                      <unittitle>Projectgroep West-Utrecht</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Projectgroep West-Utrecht</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908891">1915</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(150)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60c4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908892">1916</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(149)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60c5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Eindrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908893">1914</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(149)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60c6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Winningsmogelijkheden van grondwater in West-Utrecht.</unittitle>
                        <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">139</unitid>
                      <unittitle>Contactgroep Grondwaterbeheer Nederland-België</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Contactgroep Grondwaterbeheer Nederland-België</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908901">1737</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1979-001(1319)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60ce-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Voortgezet geohydrologisch onderzoek West-Brabant/Kempen.</unittitle>
                        <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908902">1922</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(154)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60cf-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Ingekomen en uitgegane stukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908904">1920</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(152)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d0-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken westelijk grensgebied.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908905">1921</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(153)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d1-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken Limburg en oostelijk Noord-Brabant.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908906">1917</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(151)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d2-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van de Werkgroep van de Contactgroep Grondwaterbeheer Grensstreek Nederland-België.</unittitle>
                        <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1923-1924</unitid>
                        <unittitle>Projectgroepen.</unittitle>
                        <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908908">1923</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(155)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Afvoermetingen,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908909">1924</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(156)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Geohydrologie,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908910">3061</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d6-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Inventarisatie van geohydrologische gegevens, alsmede de eerste richtlijnen voor aanvullend onderzoek ten behoeve van het grondwaterbeheer in de grensstreek.</unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908911">3062</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60d7-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Nota inzake evaluatie van gegevens en organisatie van onderzoek in het grensgebied.</unittitle>
                        <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">140</unitid>
                      <unittitle>Strategie Ontwerp Team van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland (IODZH)</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Strategie Ontwerp Team</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Vergaderstukken, onderzoeken en eindrapport</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908920">1925</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(157)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60e0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908921">1308</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-001(1362)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60e1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Werkprogramma vanaf juni 1981 tot einde studie,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908922">1334</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1982-001(1387)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60e2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gevoeligheidsanalyses met behulp van metamodellen,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908924">1333</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1982-003(1386)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60e3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Opzet voor de analyses ten behoeve van het eindrapport door A.H.M. Bresser,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908925">1414</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1983-002(1414)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60e4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Eindrapport over de toekomstige drinkwatervoorziening,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">142</unitid>
                      <unittitle>Projectgroep Oost-Utrecht</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Projectgroep Oost-Utrecht</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908933">1930</unitid>
                        <unitid audience="internal" type="obsolete">CA23-83(163)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60ec-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">143</unitid>
                      <unittitle>Onderzoek Coördinatieteam van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Onderzoek Coördinatieteam van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1932-1934</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908942">1932</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(165)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60f5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908943">1933</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(166)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60f6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908944">1934</unitid>
                          <unitid audience="internal" type="obsolete">CA23-83(167)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60f7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908945">1931</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(164)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60f8-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Verslagen.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908946">1935</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(168)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60f9-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Correspondentie.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>div.nrs.</unitid>
                        <unittitle>Rapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908949">1735</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1979-003(1317)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60fb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Briefing 5 juli 1979,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908950">1726</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1979-002(1311)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60fc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Centraal systeemonderzoek: Beschrijving van het fysieke systeem en de schematisatie,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908951">1757</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-016(1342)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60fd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Een samenvattend overzicht van aard, inhoud en planning van het integrale onderzoek naar de toekomstige drinkwatervoorziening in de provincie Zuid-Holland,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908952">1722</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-013(1323)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60fe-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport inzake de studiedag over de effecten van waterwinning op het natuurlijk milieu,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908953">1755</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-001(1341)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-60ff-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Samenvattend interimrapport over de eerste fase van het systeemonderzoek,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908954">1315</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-024(1368)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6100-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapporten betreffende de lezingen op de voorlichtingsdag op 26 oktober 1981,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908955">1736</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1979-001(1318)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6101-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport Planvarianten in de duinen bij Monster en tussen Scheveningen en Katwijk; recreatie-onderzoek,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908956">1756</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-015(1343)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6102-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Reactienota naar aanleiding van opmerkingen over het interimrapport,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908957">1412</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1983-001(1413)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6103-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Notities omtrent verrichte advieswerkzaamheden ten behoeve van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland (IODZH).</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908958">1758</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1980-014(1344)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6104-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Interimrapport ten behoeve van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland (IODZH).</unittitle>
                        <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908959">1332</unitid>
                        <unitid audience="internal" type="obsolete">R19-83/1982-001(1385)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6105-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Kosten ten behoeve van recreatie en natuurbeheer in duingebieden door ir. B.H. Tingena en ing. J. van der Plaat.</unittitle>
                        <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>3024-3026</unitid>
                        <unittitle>Vergaderstukken van de Stuurgroep Integraal Onderzoek Drinkwatervoorziening Zuid-Holland (IODZH).</unittitle>
                        <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908961">3024</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6107-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908962">3025</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6108-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908963">3026</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6109-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2749-2750</unitid>
                        <unittitle>Vergaderstukken van de Werkgroep Integraal Onderzoek Drinkwatervoorziening Zuid-Holland (IODZH).</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63908966">2749</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-610b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63908967">2750</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-610c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">144</unitid>
                      <unittitle>Overleggroepen Milieueffecten en Recreatie van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Overleggroepen Milieueffecten en Recreatie van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908975">1918</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(169)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6114-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">145</unitid>
                      <unittitle>Projectgroep Betrouwbaarheidsanalyse Milieueffecten van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Projectgroep Betrouwbaarheidsanalyse Milieueffecten van het Integraal Onderzoek Drinkwatervoorziening Zuid-Holland</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908983">1919</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(170)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-611c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">146</unitid>
                      <unittitle>Werkgroep Evaluatie Opslag Radioactief Afval</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Evaluatie Opslag Radioactief Afval</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63908991">1936</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(171)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6124-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63908992">1937</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(171)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6125-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Behandeling van diverse aangelegenheden, tevens het tweede voortgangsverslag van de Werkgroep.</unittitle>
                        <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">147</unitid>
                      <unittitle>Interne Werkgroep Panheel</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Interne Werkgroep Panheel</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63909001">1938</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(172)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-612d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">148</unitid>
                      <unittitle>Projectgroep Bodemsanering</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Projectgroep Bodemsanering</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1941-1943</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63909010">1941</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(173)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6136-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909011">1942</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(174)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6137-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909012">1943</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(175)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6138-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>1939-1940</unitid>
                        <unittitle>Nota's en rapporten.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63909014">1939</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(173)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-613a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909015">1940</unitid>
                          <unitid audience="internal" type="obsolete">CA/23-83(174)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-613b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909016">2725</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-613c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Meerjarenprogramma.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909017">2729</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-613d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Bodemsaneringsprogramma.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">149</unitid>
                      <unittitle>Werkgroep Hydride Techniek</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Werkgroep Hydride Techniek</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63909026">1944</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(176)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6145-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">150</unitid>
                      <unittitle>Adviesgroep Sanering Olieverontreiniging</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Adviesgroep Sanering Olieverontreiniging</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63909034">1945</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(177)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-614d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">151</unitid>
                      <unittitle>Landelijke Coördinatiecommissie Geohydrologisch Onderzoek</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Landelijke Coördinatiecommissie Geohydrologisch Onderzoek</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63909042">1947</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(178)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6155-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909043">1946</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(178)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6156-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Behandeling van diverse aangelegenheden met betrekking tot de grondwaterproblematiek.</unittitle>
                        <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">152</unitid>
                      <unittitle>Kernteam Advisering Bodemsanering</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Kernteam Advisering Bodemsanering</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c level="file">
                      <did>
                        <unitid identifier="63909051">1948</unitid>
                        <unitid audience="internal" type="obsolete">CA/23-83(179)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-615e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken en adviesrapport.</unittitle>
                        <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                      </did>
                    </c>
                  </c>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">154</unitid>
                      <unittitle>Commissie Limnologie van Spaarbekkens</unittitle>
                    </did>
                    <bioghist>
                      <list type="simple">
                        <item>
                          <corpname role="actor">Actor: Commissie Limnologie van Spaarbekkens</corpname>
                        </item>
                        <item>Bron: Archiefinventaris RID.
</item>
                        <item>Product: Adviesrapport.
</item>
                        <item>Datum: <date normal="20050425">25-04-2005</date>
                        </item>
                      </list>
                    </bioghist>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2925-2927, 2981-2983</unitid>
                        <unittitle>Vergaderstukken.</unittitle>
                        <unitdate calendar="gregorian" normal="1967/1972" era="ce">1967-1972</unitdate>
                      </did>
                      <odd>
                        <p>Met hiaten</p>
                      </odd>
                      <c level="file">
                        <did>
                          <unitid identifier="63909063">2925</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6169-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>001 - 030,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909064">2926</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-616a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>031 - 070,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909065">2927</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-616b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>071 - 120,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909066">2981</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-616c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>121 - 170,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909067">2982</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-616d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>171 - 219,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909068">2983</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-616e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>233 - 309,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909069">2221</unitid>
                        <unitid audience="internal" type="obsolete">C63-73(28)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-616f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapport van de Commissie Limnologie Spaarbekkens.</unittitle>
                        <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                      </did>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">166</unitid>
                    <unittitle>Het vaststellen van de opdracht en het eindproduct van (wetenschappelijk) onderzoek betreffende het beleidsterrein drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Product: Brieven, rapport.
</item>
                      <item>Opm.: 1: Het onderzoek wordt verricht in opdracht van de rijksoverheid, de provincies, de gemeenten en de waterschappen.<lb></lb>Het onderzoek betreft onder andere:<lb></lb>- Drinkwatervoorziening. Hierbij kan de nadruk op verschillende aspecten liggen, bijvoorbeeld de mogelijkheid tot het aanleggen, uitbreiden, verbeteren, verplaatsen en opheffen van de (drink) watervoorziening in kwestie, gedrag en de gevolgen van milieugevaarlijke stoffen, toe te passen materialen voor de (drink)watervoorziening en de uitwerking daarvan op de waterkwaliteit, samenstelling van het drinkwater, gezondheidsaspecten, geohydrologische aspecten van boven- en ondergrondse opslag van oppervlaktewater ten behoeve van (drink)watervoorziening, calamiteiten, de huidige (financiële) staat of werking van de (drink) watervoorziening, of toekomstig waterverbruik.<lb></lb>- Het (grond)water. Hierbij kan de nadruk op verschillende aspecten liggen zoals de (grond)waterwinning, (bescherming van) de kwaliteit of de samenstelling van het (grond)water met het oog op de volksgezondheid.<lb></lb>- Het (industrieel) waterverbruik.<lb></lb>- De bodem. Hierbij kan de nadruk op verschillende aspecten liggen zoals de kwaliteit of de samenstelling van de bodem met het oog op de volksgezondheid.<lb></lb>2: De handelingen die in het BSD Milieubeheer staan met betrekking tot onderzoek van het RID passen in dit kader.<lb></lb>Het betreft handelingen 28 t/m 30.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.6</unitid>
                      <unittitle>HET VASTSTELLEN VAN OPDRACHT EN EINDPRODUCT INZAKE (WETENSCHAPPELIJK) ONDERZOEK DRINKWATERVOORZIENING</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.6.01</unitid>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63910610">387</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(1)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66ef-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar een centrale drinkwatervoorziening voor Noord-Holland, Zuid-Holland en Utrecht.</unittitle>
                          <unitdate calendar="gregorian" normal="1912/1931" era="ce">1912-1931</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910611">489</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/240(15)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Wateronttrekking en afzanding van de duinen.</unittitle>
                          <unitdate calendar="gregorian" normal="1913" era="ce">1913</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910612">1664</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1916-1(1)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het watergevend vermogen van een groep putten door de ingenieur J. Versluys.</unittitle>
                          <unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910613">525</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/051(56)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoekingen aangaande de toepassing en de bruikbaarheid der wichelroede hier te lande.</unittitle>
                          <unitdate calendar="gregorian" normal="1921" era="ce">1921</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910614">274</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/9</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Instructies voor het nemen van watermonsters.</unittitle>
                          <unitdate calendar="gregorian" normal="1924" era="ce">1924</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910615">1668</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1927-7(6)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bijdrage tot de studie van het vraagstuk der rivierwaterzuivering door J.E. Carrière.</unittitle>
                          <unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910616">578</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/023(139)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Statistische berekeningen omtrent voedselverbruik en dagelijkse jodiumopname door J.F. Reith.</unittitle>
                          <unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Infrastructuur.</unittitle>
                          <unitdate calendar="gregorian" normal="1928/1954" era="ce">1928-1954</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910619">537</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/071(122)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Filterregulateurs door J.E. Carrière,<unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910620">301</unitid>
                            <unitid audience="internal" type="obsolete">A13-73</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de betrouwbaarheid van waterleidingen,<unitdate calendar="gregorian" normal="1930/1941" era="ce">1930-1941</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910621">618</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/107(213)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66f9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de oorzaken van het optreden van buisbreuken in de dienstleidingen van de Stichting Drinkwaterleiding De Drie Gemeenten,<unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910622">761</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/127(306)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66fa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hygiënisch-technisch onderzoek naar de betrouwbaarheid der waterleidingen in Nederland, juni 1939,<unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910623">908</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/307(562)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66fb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Verslag van de proefnemingen met verplaatsbare waterzuiveringsinstallaties,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910624">1670</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1929-9(8)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66fc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bijdrage tot de kennis van de invloed van de getijbeweging op de stijghoogte van het grondwater door J.H. Steggewentz hydroloog.</unittitle>
                          <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910625">1669</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1929-8(7)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66fd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>L'alimentation en eau potable aux Pays-Bas door W.F.J.M. Krul en F.A. Liefrinck.</unittitle>
                          <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910626">1008</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/(141)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66fe-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake de hydrologische gesteldheid der onderzochte terreinen.</unittitle>
                          <unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910627">608</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/021(158)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66ff-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leidende gedachten, inrichting en eerste resultaten van een vergelijkende studie betreffende het klei- en zavelgebied der provincie Groningen en enige kleigebieden tussen de grote rivieren.</unittitle>
                          <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910628">291</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/30</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6700-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verlenen van medewerking aan het verkrijgen van schaarse chemicaliën voor het zuiveren van water.</unittitle>
                          <unitdate calendar="gregorian" normal="1940/1945" era="ce">1940-1945</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910629">1427</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/342(1424)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6701-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>A horizontal scale model, based on the viscous flow analogy, for studying groundwaterflow in an aquifer having storage, door G. Santing.</unittitle>
                          <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910630">1032</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1953-013(522)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6702-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake de toepassing van geo-elektrische metingen bij geologisch en hydrologisch onderzoek in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910632">939</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/323(585)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6703-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Beschouwingen over de mogelijkheid van een fundamenteel modelonderzoek van de beweging van het grondwater in een dijkslichaam onder invloed van de fluctuaties van het buitenwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Rijn en Maas.</unittitle>
                          <unitdate calendar="gregorian" normal="1956/1982" era="ce">1956-1982</unitdate>
                        </did>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Rijn.<unitdate calendar="gregorian" normal="1956/1982" era="ce">1956-1982</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910635">977</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/358(608)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6706-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Kanalisatie, kwelonderzoek uiterwaarden,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910636">1548</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-003(1175)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6707-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voortgangsrapport project 07-106 Waterkwaliteitsmodel,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910637">1683</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1978-001(1295)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6708-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Verontreiniging, vooruitzicht op verbetering door P. Santema,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910638">1690</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1978-1(24)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6709-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Samenvatting van de resultaten van de proeven met de infiltratie van voorgezuiverd water in Veluwezand door ir. J. Hrubec,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910639">1696</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1979-3(29)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-670a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Organic chemicals measured during 1978 in the river Rhine in the Netherlands door drs. C.F.H. Morra, ir. J.B.H.J. Linders, ing. A. den Boer, C.Th.M. Ruijgrok and dr.ir. B.C.J. Zoeteman,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910640">3045</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-670b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Slibonderzoek afvalwaterstromen in het Rijnland (Benedenrivierengebied), Rijnwaterkwaliteitsmodel en Rijninventarisatie,<unitdate calendar="gregorian" normal="1980/1982" era="ce">1980-1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910641">1725</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1981-7(45)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-670c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Inventarisatie van organische microverontreinigingen in 1979 door J.B.H.J. Linders, C.F.H. Morra, A.C. den Boer, C.Th.M. Ruijgrok,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1512, 1740</unitid>
                            <unittitle>Beide rivieren.<unitdate calendar="gregorian" normal="1962/1979" era="ce">1962-1979</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910643">1512</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(994)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-670e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De kwaliteit van het water ten aanzien van 12 bestanddelen,<unitdate calendar="gregorian" normal="1962/1967" era="ce">1962-1967</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910644">1740</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1980-001(1325)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-670f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Een beschrijving van de kwalitatieve en kwantitatieve aspecten van slib in relatie tot de drinkwatervoorziening,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Maas.<unitdate calendar="gregorian" normal="1967/1980" era="ce">1967-1980</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910646">1280</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(939)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6711-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de beschikbaarheid van water in de toekomst,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910647">1511</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(993)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6712-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de beschikbaarheid en voorraadvorming van water voor bevolking en industrie in Nederland,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910649">2788</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6713-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Overleg met Rijkswaterstaat Directie Limburg omtrent waterkwaliteits- en kwantiteitsonderzoek voor de Maas,<unitdate calendar="gregorian" normal="1977/1980" era="ce">1977-1980</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910650">389</unitid>
                          <unitid audience="internal" type="obsolete">B456/13-73(3)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6714-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de drinkwatervoorziening in het Westen des Lands.</unittitle>
                          <unitdate calendar="gregorian" normal="1957/1964" era="ce">1957-1964</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910651">1507</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/194(991)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6715-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verslag over de toegepaste berekening van de factoren R en A uit de steunformule der verspreide percelen voor de jaren 1964-1968.</unittitle>
                          <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910652">1584</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1970-001(1018)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6716-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Grondwaterstandfluctuaties en kwaliteitsbeheersing bij kunstmatige infiltratie door drs. E. Romijn.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910653">181</unitid>
                          <unitid audience="internal" type="obsolete">74-83/207</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6717-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoeken naar de kwaliteit van het grondwater ten behoeve van de drink- en industriewatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1971/1977" era="ce">1971-1977</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910654">1675</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1972-2(11)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6718-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Methoden ter berekening van de verlagingen van het freatisch vlak tengevolge van waterwinning door ir. D. v. Rijsbergen.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910655">60</unitid>
                          <unitid audience="internal" type="obsolete">74-83/72</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6719-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verlenen van medewerking aan het opstellen van kwartaalrapportages in het kader van het kwaliteitsonderzoek van de rijkswateren in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1972/1976" era="ce">1972-1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910656">1499</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1973-002(1134)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-671a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de technische mogelijkheden om een mergelgroeve in te richten als spaarbekken.</unittitle>
                          <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910657">1471</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/511(1115)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-671b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verslag van een onderzoek naar de praktische toepasbaarheid van een computermodel voor de berekening van grondwaterstandsverlagingen ten gevolge van een grondwateronttrekking in een gebied met vrije afwatering.</unittitle>
                          <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910660">3123</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-671c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Concentration techniques for ultra-trace analysis with high-resolution gas chromatography to be used in waterpollution analysis.</unittitle>
                          <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910661">1677</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1974-3(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-671d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Threshold odour concentrations in water of chemical substances door ir. B.C.J. Zoeteman.</unittitle>
                          <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910662">66</unitid>
                          <unitid audience="internal" type="obsolete">74-83/75</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-671e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het instellen van informatiesystemen ten behoeve van de kwaliteit van het oppervlaktewater.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1977" era="ce">1974-1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910663">3046</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-671f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar methodes om toxicologische en carcinogene eigenschappen van polycyclische aromatische koolwaterstoffen (PAK's) in milieumonsters te kunnen analyseren.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1980" era="ce">1974-1980</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910664">40</unitid>
                          <unitid audience="internal" type="obsolete">74-83/54</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6720-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het microscopisch onderzoeken van de toxiciteit van blauwwieren.</unittitle>
                          <unitdate calendar="gregorian" normal="1974/1983" era="ce">1974-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910665">1547</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1975-002(1174)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6721-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Interimrapport Analyse van dynamische verschijnselen in het aquatische ecosysteem door ir. P.M. van den Broecke.</unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910666">1685</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1975-8(19)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6722-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek merkstoffen door ir. W. van Duijvenbooden.</unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910667">3124</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6723-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Polynuclear aromatic hydrocarbons in the water environment of the netherlands, a presentation of measurements in 1973 and 1974.</unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910668">1549</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/550(1177)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6724-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Samenvatting van een onderzoek naar mechanische putverstopping aan een putinfiltratiemodel.</unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910669">1569</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1976-009(1200)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6725-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de regenwaterkwaliteit door middel van 22 regenwaterkwaliteitsmeters door ir. R. Klomp en W.H. Willemsen.</unittitle>
                          <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910670">1575</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1976-002(1204)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6726-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Opzet van een geïntegreerd informatiesysteem met betrekking tot water.</unittitle>
                          <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910671">1615</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1977-002(1234)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6727-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Compilation of odour threshold values in air and water.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910672">1688</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1977-6(22)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6728-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De berekening van de temperatuursverhoging in het grondwater tengevolge van een koelwaterinjectie door ir. M.C. Brandes en ir. G.J.M. Uffink.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910674">1672</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1977-005(1237)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6729-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het gebruik van XAD-harsen voor de isolatie van organische stoffen uit drinkwater ten behoeve van diertoxicologisch onderzoek door drs. F.E. de Grunt.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910676">1687</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1977-3(21)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-672a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Lagere chloorkoolwaterstoffen in het watermilieu door ir. J. Hrubec.</unittitle>
                          <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>233-235</unitid>
                          <unittitle>Het opzetten van een landelijk meetnet regenwaterkwaliteit in samenwerking met het Koninklijk Meteorologisch Instituut (KNMI) en de waterleidingbedrijven.</unittitle>
                          <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910678">233</unitid>
                            <unitid audience="internal" type="obsolete">74-83/235</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-672c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910679">234</unitid>
                            <unitid audience="internal" type="obsolete">74-83/236</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-672d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1979/1983" era="ce">1979-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910680">235</unitid>
                            <unitid audience="internal" type="obsolete">74-83/236</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-672e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bijlagen.</unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910681">403</unitid>
                          <unitid audience="internal" type="obsolete">74-83/271</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-672f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoeken van loodexpositie via het drinkwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910682">1694</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1978-7(27)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6730-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Doelstelling voor eutrofiëringsbestrijding in Nederland, een discussienota met betrekking tot gewenst onderzoek door dr.ir. B.C.J. Zoeteman, drs. F.I. Kappers, drs. J.C. v.d. Vlugt en ir. I. Postma.</unittitle>
                          <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910683">1646</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1978-003(1273)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6731-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de verwijdering van algen en fosfaten uit IJsselmeerwater door middel van flotatie.</unittitle>
                          <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910684">1692</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1978-3</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6732-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Vergelijkende onderzoekingen betreffende het isoleren van coliformen en faecale colibacteriën in diverse typen water door H.J. Kool, J.G. de Graan en E. van Welie.</unittitle>
                          <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910685">2842</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6733-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek door de Werkgroep Warm Water, ingesteld door het Keuringsinstituut voor Waterleidingartikelen, inzake de hygiënische bereiding van warmwater voor consumptief gebruik.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910686">3134</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6734-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar mogelijke watervoorzieningssystemen in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910687">1700</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1979-5(31)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6735-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Chemische oxidatie een belangrijke techniek van drinkwaterzuivering.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910688">1710</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1979-004(1303)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6736-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Milieutoxicologisch onderzoek ter onderbouwing van het classificeren van nitrotolueen en nitrobenzeen en van het stellen van een grenswaarde voor nitrotolueen in oppervlaktewater.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910689">1709</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1979-002(1302)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6737-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de aanwezigheid van vluchtige organische halogeenverbindingen in grondwater bestemd voor de drinkwatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910690">1704</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/546(1300)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6738-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de interactie tussen verdamping, onverzadigde en verzadigde grondwaterstroming.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910691">1702</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/545(1299)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6739-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Schatting van de grondwateraanvulling door de neerslag door ir. H.A.J. van Lanen.</unittitle>
                          <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910692">221</unitid>
                          <unitid audience="internal" type="obsolete">74-83/224</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-673a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Uitvoering van grondboringen en het afwerken hiervan tot blijvende waarnemingsputten in het kader van een in te richten landelijk meetnet voor de grondwaterkwaliteit in de provincies Noord-Holland en Overijssel.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1980" era="ce">1979-1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910693">15</unitid>
                          <unitid audience="internal" type="obsolete">74-83/16</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-673b-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Regels voor het aanvaarden van onderzoek- en adviesopdrachten door het RID.</unittitle>
                          <unitdate calendar="gregorian" normal="1979/1981" era="ce">1979-1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910694">1703</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1980-3(33)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-673c-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Berekening van bodemconstanten uit pompproefgegevens met behulp van niet-lineaire regressie-analyse door A. Leijnse.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910695">1746</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-001(1332)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-673d-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De bepaling van cyanide door M.J. 't Hart, M.T. Vermaak en B.J.A. Haring.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910696">1714</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1980-8(37)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-673e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De bepaling van de doorlatendheid van watervoerende pakketten door G.J.M. Uffink.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910697">1705</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1980-4(34)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-673f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Een geautomatiseerde bepalingsmethode voor sulfaationen door M.J. 't Hart, A.V.J. de Jong en B.W. Kleibergen.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910698">1743</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-004(1329)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6740-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota houdende een vergelijking van netto-neerslagtekorten en grondwaterstanden van 1980 met die van 1976.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910699">1741</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1980-012(1326)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6741-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Proefonderzoek naar het effect van chloor op zwembadwater door P. Slingerland en dr. F.J.J. Brinkmann.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910700">1707</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1980-5(35)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6742-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Toxicologisch onderzoek met de klauwpad Xenopus laevis aan biologisch gezuiverd huishoudelijk afvalwater na hyperfiltratie door W. Slooff, B. de Graaf en J. Hrubec.</unittitle>
                          <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910701">1717</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-2(39), R19-83/1980-011(1328)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6743-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Epidemiological study on the relationship between water quality and health parameters in The Netherlands: Cancer mortality in relation to drinking water in The Netherlands door H.J. Kool, W. Slooff, B.C.J. Zoeteman, G.J. Piet and J.B.H.J. Linders.</unittitle>
                          <unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910702">1324</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-015(1378)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6744-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>A groundwater primer door G.J. Heij and C.R. Meinardi.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910703">1723</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-4(43)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6745-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De afvlakking van temperatuurvariaties in het grondwater door warmteuitwisseling tussen het watervoerende pakket en de boven- en ondergelegen pakketten door G.J.M. Uffink.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910704">1724</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-6(44)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6746-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De plaats van waarnemingsfilters voor het signaleren van putverstopping door M.C. Brandes.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910705">3122</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6747-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gecoördineerd milieuonderzoek en activiteitenprogramma van het RID/RIV 1982 - 1984 en het RIV/RID/IVA 1983 - 1985.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910706">1721</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-3(42)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6748-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het gedrag van cyanide en barium in de bodem door P. Lagas, J.P.G. Loch, M.J. 't Hart, C.M. Bom en S. v.d. Berg.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910707">1720</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1981-2(41)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6749-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Kolomonderzoek naar het gedrag van zware metalen in de bodem door J.P.G. Loch en P. Lagas.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910709">3095</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-674a-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport integraal milieuproduktieplan over de ontwikkeling en toepassing van milieuvriendelijke technieken ter versterking van het milieubeleid.</unittitle>
                          <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>3112-3113</unitid>
                          <unittitle>Project inzake het ontwikkelen van technieken om de effecten te voorspellen van voorgenomen activiteiten op de kwaliteit van bodem en grondwater en de evaluatie van deze effecten in relatie met de volksgezondheid in het kader van milieu-effectrapportage (M.E.R.).</unittitle>
                          <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910712">3112</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-674c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Fase 1,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910714">3113</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-674d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Fase 2,<unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910715">1328</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1982-012(1381)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-674e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Berekening stroombanen van grondwater ten gevolge van putschermen opgesteld door E.J.M. Veling.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910717">1729</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1982-8(47)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-674f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>De biologische effecten van doorstroomkoeling een literatuurstudie door D. de Zwart.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910719">3055</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6750-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Ontwikkeling van een instrument ter beoordeling van luchtverontreinigende stoffen ten behoeve van een beleidsmatige prioriteitenstelling.</unittitle>
                          <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910720">229</unitid>
                          <unitid audience="internal" type="obsolete">74-83/231</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6751-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Gevolgen van grondwateronttrekking bij bruinkoolwinning voor het hydrologische regime in het Centrale Slenkgebied.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910722">45</unitid>
                          <unitid audience="internal" type="obsolete">74-83/59</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6752-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het onderzoeken van de variaties in fysisch-chemische bodemkarakteristieken door het uitvoeren van boringen met behulp van het Ackermann-systeem.</unittitle>
                          <unitdate calendar="gregorian" normal="1982/1983" era="ce">1982-1983</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910724">1393</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1983-002(1402)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6753-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Environmental impact assessment at the level of policy-planning; Experiences obtained from an eis on planning of drinking water and industrial water supply in the Netherlands door ir. F. Langeweg.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910725">1402</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1983-006(1409)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6754-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Evaluatie van het onderzoek proefopstelling Integrale Afvalwater Afvoerplannen (IAAP) (M131) door ir. A.A. Kranenburg.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910726">1731</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1983-6(48)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6755-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Studie naar beschikbare wiskundige modellen voor beschrijving van het gedrag van bestrijdingsmiddelen in de bodem door J.B.H.J. Linders.</unittitle>
                          <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910727">290</unitid>
                          <unitid audience="internal" type="obsolete">A 13-73/22</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6756-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Instructie voor het gebruik van tekens en kleuren bij het beschrijven van boorprofielen.</unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.6.02</unitid>
                        <unittitle>PROVINCIES</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.1</unitid>
                          <unittitle>Groningen</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910730">539</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/021(123)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6759-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gegevens inzake een veenkoloniale waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910731">161</unitid>
                            <unitid audience="internal" type="obsolete">74-83/185</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-675a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het uitvoeren van boringen en het afwerken daarvan tot blijvende waarnemingsputten in de omgeving van de gemeenten Scheemda en Winschoten in het kader van de hydrologische verkenning van de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>138, 1578</unitid>
                            <unittitle>Bellingwolde, pompproef.</unittitle>
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                            <did>
                              <unitid identifier="63910734">138</unitid>
                              <unitid audience="internal" type="obsolete">74-83/160</unitid>
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                              <unittitle>Uitwerking van de resultaten van mei 1975,<unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
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                          <did>
                            <unitid identifier="63910735">1519</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/021(1000)</unitid>
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                            <unittitle>Eemshaven, oriënterend onderzoek inzake de noodzakelijke bekkencapaciteit voor de industriewatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                            <unitid>836, 1021</unitid>
                            <unittitle>Groningen, gemeentewaterleiding; pompstation De Punt.</unittitle>
                            <unitdate calendar="gregorian" normal="1948/1957" era="ce">1948-1957</unitdate>
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                            <did>
                              <unitid identifier="63910737">836</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/073(427)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6760-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de werking van de bezinkbakken,<unitdate calendar="gregorian" normal="1948" era="ce">1948</unitdate>
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                            <did>
                              <unitid identifier="63910738">1021</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/073(642)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6761-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de meest economische uitbreiding van de transportcapaciteit,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                          </c>
                        </c>
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                          <did>
                            <unitid identifier="63910739">148</unitid>
                            <unitid audience="internal" type="obsolete">74-83/171</unitid>
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                            <unittitle>Haren, gemeente; uitvoeren van boringen in de waarnemingsput op het terrein van het pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
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                          <did>
                            <unitid identifier="63910740">1712</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1979-007(1305)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6763-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Kibbelgaarn, resultaten van de in september 1978 gehouden pompproef.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910742">158</unitid>
                            <unitid audience="internal" type="obsolete">74-83/182</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6764-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nieuweschans, het uitvoeren van proefboringen in de bronnenbadplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910743">812</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/216(412)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6765-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rottegatspolder, nota inzake de resultaten van de verrichte aantal boringen en peilwaarnemingen.</unittitle>
                            <unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910745">1747</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-018(1333)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6766-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vriescheloo, resultaten van de in september 1978 gehouden pompproef opgesteld door ing. H. Snelting.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910746">1748</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-020(1334)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6767-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zuidoost-Groningen, de uitbreiding van het peilbuizennet in verband met een mogelijke wijziging van het freatisch vlak als gevolg van de aanleg van het kanaal Veendam-Musselkanaal opgesteld door ir. P. Glasbergen en ing. H. Sondorp.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.2</unitid>
                          <unittitle>Friesland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910748">1620</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/517(1243)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6769-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oldeholtpade, resultaten van de in maart 1977 gehouden pompproef.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910749">941</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/144(586)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-676a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Terschelling, nota inzake de invloed van het onttrekken van diep duinwater op de grondwaterstand.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.3</unitid>
                          <unittitle>Drenthe</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910751">1416</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1972-040(1092)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-676c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de geologische opbouw  ten behoeve van de ontwikkeling van de waterhuishouding van deze provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910752">633</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/073(220)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-676d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Drentsche A, verwachte invloed der ontworpen verbeteringen op het debiet van het riviertje bij het pompstation De Punt van de gemeentewaterleiding van Groningen.</unittitle>
                            <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                          </did>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1368, 1608</unitid>
                            <unittitle>Drenthe, NV Waterleidingmaatschappij; gevolgen van uitbreiding van de capaciteit van waterwinplaatsen.</unittitle>
                            <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910755">1608</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/078(1026)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-676f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gasselte,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910757">1368</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/078(1059)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6770-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Assen,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1624, 1648</unitid>
                            <unittitle>Hoogeveensche Vaart, verlaging van de grondwaterstand ten gevolge van de omlegging en peilverlaging over het traject Meppelerdiep-Ossesluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910760">1624</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/522(1247)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6772-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910761">1648</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/537(1275)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6773-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Eindrapport,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1642-1643</unitid>
                            <unittitle>Sleen, studiegebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910764">1643</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/541(1270)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6775-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Opzet en achtergronden van het onderzoek naar de hydrologische deelsystemen,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910766">1642</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1978-002(1269)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6776-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Werkplan met toelichting ten behoeve van het vooronderzoek,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910767">1306</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1981-004(1360)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6777-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zeyerveld, analyse en interpretatie van de tussen 4 september en 15 oktober 1979 gehouden pompproef.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910768">1506</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1974-001</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6778-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zuidbarge, onderzoek naar de hydrologische consequenties van een stijging van de grondwaterspiegel voor een geprojecteerde weginsnijding.</unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                          </did>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.4</unitid>
                          <unittitle>Overijssel</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910770">143</unitid>
                            <unitid audience="internal" type="obsolete">74-83/172</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-677a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bodemonderzoeken en boringen in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910771">3043</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-677b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Almelo-Wierden, onderzoek naar de bodem en grondwaterverontreiniging van het voormalig Broomchemie-terrein.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910772">1749</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-009(1335)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-677c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Delden, complexering van zware metalen in vuilstortpercolaat opgesteld door P. Lagas en dr.ir. K. Harmsen.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>605, 970</unitid>
                            <unittitle>Deventer.</unittitle>
                            <unitdate calendar="gregorian" normal="1927/1952" era="ce">1927-1952</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910774">605</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/038(111)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-677e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de mogelijkheid van het gebruik van diepgrondwater bij de gemeentewaterleiding,<unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910775">970</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/038(500)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-677f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake een geo-elektrische meting nabij de gasfabriek,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>789, 811</unitid>
                            <unittitle>Enschede.</unittitle>
                            <unitdate calendar="gregorian" normal="1941/1947" era="ce">1941-1947</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910777">789</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/043(349)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6781-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek Haagsche Bosch en omgeving over de jaren 1931 tot en met 1940,<unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910778">811</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/043(414)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6782-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake het voorkomen van Onder-Neocoom in Twente in verband met de watervoorziening van de gemeente Enschede,<unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1329, 1644</unitid>
                            <unittitle>Espelosebroek.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1982" era="ce">1978-1982</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910780">1644</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1978-019(1271)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6784-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de resultaten van enkele berekeningen met het digitale stationaire grondwaterstromingsmodel,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910782">1329</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1982-009(1382)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6785-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Modelonderzoek naar de gevolgen voor de grondwaterstand bij grondwaterwinning te Espelo door G. Grakist en W. Post,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910783">1580</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-011(1209)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6786-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Haaksbergen, gemeente; nota over de pompproef Asbroek.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910785">141</unitid>
                            <unitid audience="internal" type="obsolete">74-83/163</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6787-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hardenberg, gemeente; het berekenen van de gevolgen van een retourbemaling door het bedrijf WAVIN/KLS BV.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>751, 895</unitid>
                            <unittitle>Hengelo, gemeentelijk waterleidingbedrijf.</unittitle>
                            <unitdate calendar="gregorian" normal="1946/1950" era="ce">1946-1950</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910787">751</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/013(393)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6789-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De verschillende mogelijkheden om het produktievermogen te vergroten,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910788">895</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/013(463)</unitid>
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                          <did>
                            <unitid identifier="63910789">1552</unitid>
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                            <unittitle>Holten, onderzoek naar de kwaliteit en herkomst van het grondwater gewonnen op het pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                          <did>
                            <unitid identifier="63910790">638</unitid>
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                            <unittitle>Kampen, drinkwaterleiding van de gemeente; het vergroten van de aanvoercapaciteit.</unittitle>
                            <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
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                          <did>
                            <unitid identifier="63910791">1070</unitid>
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                            <unittitle>Markelo, onderzoek naar de grondwaterstandverlagingen in de omgeving van de waterwinplaats Herikerberg van de Waterleidingmaatschappij Overijssel NV.</unittitle>
                            <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                            <unitid identifier="63910792">971</unitid>
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                            <unittitle>Oldenzaal, zuiveringsproeven pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910793">1728</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1979-015(1312)</unitid>
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                            <unittitle>Overijsselse Vechtstreek, toepassing van een grondwaterstromingsmodel voor het oostelijk deel.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                          <did>
                            <unitid identifier="63910794">159</unitid>
                            <unitid audience="internal" type="obsolete">74-83/183</unitid>
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                            <unittitle>Overijsselsche Vecht-West, het uitvoeren van een aantal boringen en het afwerken daarvan tot blijvende pomp- of waarnemingsputten in het kader van het regionaal onderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
                            <physdesc>
                              <extent>pak</extent>
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                          <did>
                            <unitid identifier="63910795">1626</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1977-002(1249)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6791-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Twente, invoergegevens ten behoeve van een onderzoek van spaarbekkens door ir. F. Langeweg en ir. J.G. de Graan.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                          <did>
                            <unitid identifier="63910796">869</unitid>
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                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6792-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Wezep en Kampen, resultaten van drukmetingen op de beide transportleidingen en over de consequenties die deze resultaten met zich meebrengen.</unittitle>
                            <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910797">2879</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6793-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Wierden, gemeente; onderzoek naar mogelijke wateronttrekking aan de bodem door het pompstation Hoge Heksel.</unittitle>
                            <unitdate calendar="gregorian" normal="1947/1949" era="ce">1947-1949</unitdate>
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                          <did>
                            <unitid identifier="63910798">1171</unitid>
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                            <unittitle>Wierden-Hoge Heksel-Daarle, onderzoek inzake de winning van grondwater in de heuvelrug.</unittitle>
                            <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                          <unitid type="series_code">1.6.02.5</unitid>
                          <unittitle>Gelderland</unittitle>
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                          <did>
                            <unitid identifier="63910800">1341</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1970-037(1029)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6796-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Geologisch onderzoek van de Gelderse Vallei.</unittitle>
                            <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                          <did>
                            <unitid identifier="63910801">1108</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/139(739)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6797-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek van de Technische Commissie Drinkwatervoorziening op welke plaatsen in Gelderland behoorlijk drinkwater in de bodem aanwezig is.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910803">1656</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1978-001(1283)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6798-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Enkele uitbreidingen van het beslismodel van Saaty door ir. J.G. de Graan ter aanvulling op het onderzoek naar de toepasbaarheid van multi-criteria-afwegingsmodellen ten behoeve van de waterhuishouding in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                            <unittitle>Pompproeven in diverse regio's.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
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                            <did>
                              <unitid identifier="63910805">1480</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(1121)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-679a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Barneveld,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910806">1531</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-027(1156)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-679b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Ederveen,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910807">1527</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-008(1152)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-679c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Huinerbroek,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910808">1590</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-003(1214)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-679d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Lopik,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910809">1477</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(1119)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-679e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Zwartebroek,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910810">724</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/040(206)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-679f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Apeldoorn, opheffen van de agressieve eigenschappen van het water van de waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910812">640</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/089(224)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Apeldoornsch Kanaal, onderzoek naar de mogelijkheid van een vergroting van het debiet der Sprengen ten behoeve van de voeding van het hoogste pand.</unittitle>
                            <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910813">1464</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/467(969)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Apeldoorn, gemeente; drainage van de wijk De Maten.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910815">1371</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1971-036(1063)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Apeldoorn (westelijk), seismisch refractie-onderzoek in het kroondomein.</unittitle>
                            <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                            <unitid>div.nrs.</unitid>
                            <unittitle>Arnhem.</unittitle>
                            <unitdate calendar="gregorian" normal="1942/1980" era="ce">1942-1980</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910817">796</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/028(360)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vergroting van de capaciteit van het hoofdpompstation en de opjaagstations van het gemeentelijk waterleidingbedrijf,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910818">872</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/028(447)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek bij het Gemeentelijk Waterleidingbedrijf naar de noodzaak de inrichting van de bestaande aanjaagstations te vervangen,<unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910819">944</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/028(588)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de distributie van water in het voorzieningsgebied van het gemeentelijk waterbedrijf,<unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                            <did>
                              <unitid identifier="63910820">1372</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/028(1064)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de resultaten van de in februari 1971 op de waterwinplaats La Cabine gehouden pompproef,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910821">1753</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/555(1339)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Modelonderzoek inzake een aantal hydrologische aspecten met betrekking tot de waterwinplaats Immerloopark,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                            </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910822">875</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/247(448)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67a9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Doesburg, onderzoek naar het tijdens de bemaling in de bouwput voor de ontworpen schutsluis te verwachten waterbezwaar.</unittitle>
                            <unitdate calendar="gregorian" normal="1949" era="ce">1949</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910823">940</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/042(486)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67aa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Doetinchem, onderzoek naar de mogelijkheden tot uitbreiding van de capaciteit van het pompstation De Pol van de NV Waterleiding Oostelijk Gelderland.</unittitle>
                            <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
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                            <unitid>755, 1523</unitid>
                            <unittitle>Gelderland, NV Waterleiding Maatschappij.</unittitle>
                            <unitdate calendar="gregorian" normal="1946/1969" era="ce">1946-1969</unitdate>
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                            <did>
                              <unitid identifier="63910825">755</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/217(397)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ac-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek op het pompstation te Lienden,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910826">1523</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(1003)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ad-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de te verwachten daling van de grondwaterstand in de omgeving van de waterwinplaats De Haere,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910827">972</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/091(503)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ae-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Geldermalsen, onderzoek naar de oorzaken van het waterverlies en de mate van de inwendige ruwheid van het hoofdleidingnet van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910829">1654</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1978-045(1281)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67af-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gelderse Achterhoek, onderzoek naar verandering van kwaliteit van het op het pompstation De Pol opgepompte ruwwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910830">1481</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/139(1122)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Gelderse Vallei, nota inzake uitgangspunten en programma van onderzoek voor de bepaling van de optimale grondwateronttrekking.</unittitle>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910831">1479</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/139(1120)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Glindhorst, interim-nota inzake de hydrologische consequenties van de geprojecteerde grondwaterwinning.</unittitle>
                            <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910832">819</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/222(415)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Laag Keppel en Doesburg, onderzoek naar het te verwachten kwelverlies in de gekanaliseerde Ouden IJssel.</unittitle>
                            <unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910833">1738</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1979-003(1320)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Land van Altena, onderzoek naar de mogelijke verzilting van het grondwater op de waterwinplaats Genderen.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910834">1289</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/460(948)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Lobith, de zoutlozing van de kalimijnen aangepast aan de Rijnafvoer.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                          <did>
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                            <unitdate calendar="gregorian" normal="1922/1981" era="ce">1922-1981</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910836">535</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/009(66)</unitid>
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                              <unittitle>Grondwater- en bodemonderzoek in het Kronenburgerpark,<unitdate calendar="gregorian" normal="1922" era="ce">1922</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910838">1262</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/411(920)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Kwelonderzoek in verband met de stadsuitbreiding in het polderdistrict Circul van de Ooij,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910839">1553</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-034(1182)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Pompproef op het pompstation Heumensoord II,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910840">1431</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/502(1426)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67b9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gegevens nieuwe pompputten W 57 en K 23 voor de waterwingebieden aan de Nieuwe Marktstraat en in het Kronenburgerpark,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910841">226</unitid>
                              <unitid audience="internal" type="obsolete">74-83/229</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ba-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Uitvoeren van een boring en het afwerken daarvan tot pompput op het terrein van het waterwingebied Heumensoord van de openbare nutsbedrijven,<unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910842">1165</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/040(800)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67bb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Orden-Zuid (Apeldoorn), grondwaterstanden.</unittitle>
                            <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910843">1520</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1974-001</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67bc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Over-Betuwe, nota inzake de chemische samenstelling van het grondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910844">1376</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/491(1068,1069)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67bd-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Ravenswaay, onderzoek naar de toeneming van kwel na verbreding van en toelating van hogere peilen op het Betuwepand van het Amsterdam-Rijnkanaal en opheffing van de sluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910846">1651</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1978-017(1278)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67be-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Staartjeswaard, onderzoek door ir. W. van Duijvenbooden naar de kwalitatieve beïnvloeding van grond- en oppervlaktewater door het lozen van vliegas.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910847">711</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/143(285)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67bf-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Tiel, bemaling bouwputten sluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910848">1426</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/234(1423)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c0-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Veluwe district, effect van de jaarlijkse schommeling in regenval op de stroom van grondwater en het onderzoek naar de natuurlijke lozing van grondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Veluwe.</unittitle>
                            <unitdate calendar="gregorian" normal="1969/1975" era="ce">1969-1975</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910850">1514</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(995)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de mogelijkheden over te gaan tot kunstmatige infiltratie van oppervlakte water,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910851">1344</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/485(1033)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de waterbalans van een ruimte in het noordwestelijke deel,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910852">170</unitid>
                              <unitid audience="internal" type="obsolete">74-83/196</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport inzake de constructieve aspecten van een hypothetisch infiltratieproject,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910853">1554</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-035(1186)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Ecologisch onderzoek naar de gevolgen van aanleg en bovengrondse exploitatie van infiltratiewerken voor vegetatie en fauna,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>607, 700</unitid>
                            <unittitle>Wageningen.</unittitle>
                            <unitdate calendar="gregorian" normal="1927/1942" era="ce">1927-1942</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910856">607</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/031(113)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nader onderzoek van de gemeentelijke bronwaterleiding,<unitdate calendar="gregorian" normal="1927" era="ce">1927</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910857">700</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/031(361)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67c8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Ontzuring van het leidingwater,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.6</unitid>
                          <unittitle>Utrecht</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910859">1346</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1035)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ca-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Een onderzoek naar de winbare hoeveelheid grondwater in de provincie door drs. J.M.G. van Damme.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Resultaten van stop- en pompproeven.</unittitle>
                            <unitdate calendar="gregorian" normal="1971/1978" era="ce">1971-1978</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910861">1475</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(1118)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67cc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Achterveld,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910862">1439</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(1103)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67cd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Amersfoort, waterwinplaats aan de Hogeweg,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910864">1591</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/505(1215)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ce-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Beerschoten,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910865">1557</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-014(1189)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67cf-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Driebergen, pompstation,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910866">1373</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/139(1065)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Gelderse Vallei, en de plaatsing van peilbuizen aan de rand van de Utrechtse Heuvelrug,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910867">1592</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-009(1216)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Leersum,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910868">1534</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-014(1159)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Linschoten,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910869">1653</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/532(1280)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Loosdrecht,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910870">1558</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-016(1190)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d4-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Soestduinen,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910871">1559</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-017(1191)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d5-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vleuten,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910872">1556</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-013(1188)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>West-Utrecht, basiswaarden van de weerstanden van de slechtdoorlatende lagen,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910873">1529</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-016(1154)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Woudenberg,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Amersfoort.</unittitle>
                            <unitdate calendar="gregorian" normal="1942/1974" era="ce">1942-1974</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910876">805</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/019(363)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67d9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de werking van de snelfilterinstallatie van de waterleiding,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910878">1213</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1964-020(863)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67da-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Geo-elektrisch onderzoek van de Eemvallei,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910879">1533</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-012(1158)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67db-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de hydrologische gevolgen van een geprojecteerde uitbreiding van de grondwateronttrekking,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1222, 1440</unitid>
                            <unittitle>De Bilt, onderzoek en enige proeven.</unittitle>
                            <unitdate calendar="gregorian" normal="1964/1972" era="ce">1964-1972</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910882">1222</unitid>
                              <unitid audience="internal" type="obsolete">R06-80/424(860)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67dd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar het waterbezwaar van de bouwput voor de tunnel onder Rijksweg nr. 25,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910883">1440</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/424(1104)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67de-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake enige proeven inzake het verstoppen van injectieputten,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>913, 1002</unitid>
                            <unittitle>Loosdrechtse Plassen.</unittitle>
                            <unitdate calendar="gregorian" normal="1952/1954" era="ce">1952-1954</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910885">1002</unitid>
                              <unitid audience="internal" type="obsolete">R90-80/243(508)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67e0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake een voorlopig onderzoek naar de waterbalans ten behoeve van de gemeentewaterleidingen van Amsterdam,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910886">913</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/312(566)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67e1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake een onderzoek naar de waterbalans,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910887">1350</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1970-001(1040)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67e2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Maarssenbroek, nota inzake de te verwachten gevolgen van een peilverlaging in de polder.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                          <did>
                            <unitid identifier="63910888">1730</unitid>
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                            <unittitle>Remmerden, onderzoek door ir. C. Maas naar de hydrologie van de proefopstelling.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                          <did>
                            <unitid identifier="63910890">180</unitid>
                            <unitid audience="internal" type="obsolete">74-83/206</unitid>
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                            <unittitle>Utrechtse Heuvelrug, onderzoeken naar de mogelijkheid van kunstmatige aanvulling van grondwater door middel van injectie van oevergrondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
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                          <did>
                            <unitid identifier="63910891">906</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/208(470)</unitid>
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                            <unittitle>Vinkeveensche Plassen, nota inzake het te verwachten kwel- en chloorbezwaar bij inpoldering.</unittitle>
                            <unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                          <did>
                            <unitid identifier="63910892">1689</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1977-7(23)</unitid>
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                            <unittitle>West-Utrecht, de hydraulische weerstand van de Formatie van Sterksel/Kedichem door ir. G.J. Heij en ing. C.G.M. Kester.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                          <did>
                            <unitid identifier="63910893">670</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/094(242)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67e7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Woerden, onderzoek naar de oorzaken van het veelvuldig stukspringen van loden dienstleidingen bij de Stichting Drinkwater De Elf Gemeenten.</unittitle>
                            <unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                          <unitid type="series_code">1.6.02.7</unitid>
                          <unittitle>Noord-Holland</unittitle>
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                          <did>
                            <unitid identifier="63910895">728</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/191(292)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67e9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Onderzoek naar de aanvulling van de Duinwaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910896">369</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/37</unitid>
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                            <unittitle>Alkmaar, gemeente; bacteriologisch onderzoek van het drinkwater van de nooddrinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1943/1944" era="ce">1943-1944</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910897">949</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/317(591)</unitid>
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                            <unittitle>Amsterdam, NV Nederlandse Spoorwegen in 1946/47.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1078, 1215</unitid>
                            <unittitle>Amstelveen en Den Helder, bemaling van bouwputten.</unittitle>
                            <unitdate calendar="gregorian" normal="1959/1964" era="ce">1959-1964</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910900">1078</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/371(705)</unitid>
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                              <unittitle>Centrumgalerij te Amstelveen,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                            <did>
                              <unitid identifier="63910902">1215</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/429(864)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ee-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar het waterbezwaar en de gevolgen voor het pand Vroom en Dreesman te Den Helder,<unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                        </c>
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                          <did>
                            <unitid identifier="63910903">647</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/105(228)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ef-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bussum, onderzoek naar de invloed van de vuilstorting in de Eng op de hydrologische gesteldheid van de omgeving.</unittitle>
                            <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
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                          <did>
                            <unitid>1594-1595</unitid>
                            <unittitle>Castricum en Huizen, pompproeven.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910905">1594</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-004(1218)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Bewerking van gegevens uit het diepe watervoerende pakket te Castricum,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910906">1595</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-010(1219)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Huizen,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910907">479</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/008(1)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Haarlem, de prise d'eau der Haarlemsche Waterleiding van Eug. Dubois.</unittitle>
                            <unitdate calendar="gregorian" normal="1909" era="ce">1909</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910908">1263</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/451(921)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Haarlemmermeerpolder, kwelonderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910909">856</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/294(536)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Den Helder, gemeente; onderzoek inzake watervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910911">862</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/134(539)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hillegom, Lisse, Sassenheim en Warmond, gemeenten; onderzoek naar de oorzaken van het waterverlies bij de waterbedrijven.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910912">730</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1934-003(209)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hilversum, onderzoek naar de invloed van de vloeivelden op de Liebergerheide op hydrologische gesteldheid der omgeving.</unittitle>
                            <unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910913">557</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/154(128)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Jochems, afzanding duinterrein.</unittitle>
                            <unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910914">748</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/105(390)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67f9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Laren, onderzoek naar het gevaar van aantrekken van boezemwater door het pompstation der waterleiding Bussum mede in verband met de voorgenomen uitbreiding van het pompstation Laarderhoogt Provinciaal Waterleidingbedrijf van Noord-Holland.</unittitle>
                            <unitdate calendar="gregorian" normal="1945" era="ce">1945</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910915">1665</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1917-2(2)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67fa-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Marsdiep, onderzoek naar de duinvorming door de hydroloog J. Versluys.</unittitle>
                            <unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910916">1037</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/211(400)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67fb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Noord-Bakkum, onderzoek naar de invloed van de werking der secundaire op de grondwaterstand in de cultuurgronden.</unittitle>
                            <unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
                          </did>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910917">298</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/35</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67fc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Noord-Holland, provincie; onderzoeken van de gevolgen van seismisch onderzoek in waterwingebieden.</unittitle>
                            <unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910919">1110</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/380(740)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67fd-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Petten, grondwaterstroming in de duinen in de omgeving van het Reactor Centrum.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910920">1040</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/362(674)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67fe-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Tussenwijk (Wijk aan Zee), de gevolgen van grondwateronttrekking door Van Gelder en Zonen ten aanzien van de grondwaterstand in de omliggende terreinen.</unittitle>
                            <unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910922">1317</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1981-005(1370)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-67ff-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Uithoorn, gemeente; analyse van polycyclische aromaten en andere organische verontreinigingen in oppervlaktewater, grondwater en slib.</unittitle>
                            <unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                          </did>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Velsen.</unittitle>
                            <unitdate calendar="gregorian" normal="1942/1953" era="ce">1942-1953</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910924">807</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/015(364)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6801-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake een onderzoek naar het verloop der stijghoogte van het grondwater ter plaatse en in de omgeving van de waterwinplaats Driehuis van de gemeente Velsen,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
                              </unittitle>
                            </did>
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                            <did>
                              <unitid>742, 852</unitid>
                              <unittitle>Tunnel onder het Noordzeekanaal.<unitdate calendar="gregorian" normal="1944/1953" era="ce">1944-1953</unitdate>
                              </unittitle>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63910926">742</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/129(381)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6803-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nota inzake de gevolgen van de bemaling van de bouwput van het eerste gedeelte van de tunnel onder het Noordzeekanaal ten aanzien van de stijghoogte van het grondwater,<unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63910927">852</unitid>
                                <unitid audience="internal" type="obsolete">R09-80/129(534)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6804-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Bemaling,<unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                                </unittitle>
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                          </c>
                        </c>
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                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.8</unitid>
                          <unittitle>Zuid-Holland</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910929">1179</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/297(547)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6806-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Ter Aar, gemeente; onderzoek naar de waarde van pompstation in verband met aanbod van de NV Bodegraafsche Waterdistributiemaatschappij tot overdracht.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Alphen aan den Rijn.</unittitle>
                            <unitdate calendar="gregorian" normal="1947/1980" era="ce">1947-1980</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910932">824</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/174(418)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6808-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de toestand van het gemeentelijk waterleidingbedrijf,<unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910933">1630</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1977-002(1254)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6809-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Resultaten van het regeneren van de pompputten op het terrein van het waterwingebied,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910934">1762</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/553(1354)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-680a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Water- en lichtbedrijven van de gemeente, onderzoek door ir. A.N.M. Obdam inzake de stroming van diep zout grondwater naar de winningssputten van pompstation De Hoorn,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1561, 1599</unitid>
                            <unittitle>Bergambacht.</unittitle>
                            <unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910936">1561</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-015(1193)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-680c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de grootte van de putverstopping en de te volgen regeneratieprocedure voor de pompputten van het pompstation,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910937">1599</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-002(1223)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-680d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Boorprogramma 1976 pompstation Rodenhuis,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910938">1711</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1979-004(1304)</unitid>
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                            <unittitle>Bergambacht en Remmerden, makrodispersie resultaten van onderzoekingen verricht door ir. C. Maas.</unittitle>
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                          <did>
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                            <unittitle>Boskoop, het ontmanganen van het water van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                          <did>
                            <unitid identifier="63910940">823</unitid>
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                            <unittitle>Brasem, verwachte gevolgen van zandwinning voor het boezem- en polderwater van Rijnland.</unittitle>
                            <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
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                          <did>
                            <unitid identifier="63910942">295</unitid>
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                            <unittitle>Brielse Gat, het Bierkanaal en het Hartelkanaal, uitkomsten van het chemisch onderzoek van watermonsters.</unittitle>
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                            <unitdate calendar="gregorian" normal="1929/1976" era="ce">1929-1976</unitdate>
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                            <did>
                              <unitid identifier="63910947">726</unitid>
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                              <unittitle>Verslag van de voortgezette onthardingsproeven met de proefinstallatie op het terrein bij de watertoren van de gemeentelijke hogedrukwaterleiding,<unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
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                            <did>
                              <unitid identifier="63910948">821</unitid>
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                              <unittitle>Nota inzake de te verwachten invloed op de stijghoogte van het grondwater door wateronttrekking aan de bodem in de prise d'eau in de nieuwe Stadspolder,<unitdate calendar="gregorian" normal="1947" era="ce">1947</unitdate>
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                            <did>
                              <unitid identifier="63910950">1205</unitid>
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                              <unittitle>Biologisch chemisch en organoleptisch onderzoek van het water uit het Wantij en het spaarbekken De Kleine Rug,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                              <unittitle>Biologisch onderzoek van het water uit het spaarbekken De Kleine Rug,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                              <unitid identifier="63910953">3059</unitid>
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                              <unittitle>Interim-rapport inzake de chemische en biologische analyseresultaten van watermonsters uit het spaarbekken de Grote Rug en 4 modelreservoirs in 1973 en 1974,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                            <did>
                              <unitid identifier="63910954">3058</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6819-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de interaktie tussen ijzerzouten en fosfaten in het spaarbekken de Grote Rug,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                            <did>
                              <unitid identifier="63910955">1597</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-001</unitid>
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                              <unittitle>Jaarverslag 1975 van het limnologisch onderzoek in de 4 tanks,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                            <unitid identifier="63910956">3036</unitid>
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                            <unittitle>Dordrecht en Stedelijk Polder, analyseresultaten mengmonster rond de vuilstort in de polder.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                          <did>
                            <unitid identifier="63910957">658</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/156(187)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-681c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Dubbeldam, gemeente en Dordrecht; nota inzake de geologische resultaten van een boring verricht aan de Bildersteeg en een boring verricht op het terrein der gemeentegasfabriek ten behoeve van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
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                          <did>
                            <unitid identifier="63910958">871</unitid>
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                            <unittitle>Goeree-Overflakkee, verslag inzake modelproeven ten behoeve van het dijkherstel.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                            <unittitle>Goeree, bodemconstanten nabij de Westduinen en de Middelduinen.</unittitle>
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                            <unitid identifier="63910960">1336</unitid>
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                            <unittitle>Gouderak, gemeente; resultaten van organisch-chemische-analyses en een acute toxiciteitstest van grondwater afkomstig uit een tweetal geselecteerde peilputten in een voormalige stortplaats opgesteld door drs. E. de Greef.</unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
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                              <unittitle>Onderzoek naar het chloorgehalte van het duinwater,<unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
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                              <unittitle>Verslag van de vierde modelproef betreffende het zoetwaterlichaam in de duinterreinen der duinwaterleiding: bevloeiing van de westelijke duinstrook,<unitdate calendar="gregorian" normal="1950" era="ce">1950</unitdate>
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                              <unittitle>Werkgroep Wijde Aa-Andelse Maas project, alsmede een interne RID-projectgroep inzake onderzoek,<unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
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                              <unitid audience="internal" type="obsolete">74-83/234</unitid>
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                              <unittitle>Interimrapportage,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                          <did>
                            <unitid identifier="63910970">236</unitid>
                            <unitid audience="internal" type="obsolete">74-83/244</unitid>
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                            <unittitle>Hartelkanaal, uitkomsten van het chemisch onderzoek van watermonsters afkomstig.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
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                          <did>
                            <unitid identifier="63910971">1719</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/552(1309)</unitid>
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                            <unittitle>Hendrik-Ido-Ambacht, gemeente; onderzoek naar de gevolgen van tunnelaanleg onder de Noord voor de watervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                          <did>
                            <unitid identifier="63910972">541</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/007(70)</unitid>
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                            <unittitle>Hoeksche Waard, onderzoek naar de mogelijkheid van een centrale drinkwatervoorziening voor de gemeenten die daarover nog niet beschikken.</unittitle>
                            <unitdate calendar="gregorian" normal="1923" era="ce">1923</unitdate>
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                          <did>
                            <unitid identifier="63910973">615</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/027(161)</unitid>
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                            <unittitle>IJsselmonde, gemeente; mogelijkheid van het benutten van grondwater voor de waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                          <did>
                            <unitid identifier="63910974">289</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/27</unitid>
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                            <unittitle>Jutfaas en 's-Gravenhage, gemeenten; uitkomsten van het chemisch onderzoek van watermonsters afkomstig uit de proefinstallaties.</unittitle>
                            <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                              <extent>pak</extent>
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                          <did>
                            <unitid identifier="63910976">253</unitid>
                            <unitid audience="internal" type="obsolete">74-83/261</unitid>
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                            <unittitle>Katwijk, uitkomsten van chemische onderzoeken van watermonsters in het gebied ten noorden van de gemeente.</unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                          <did>
                            <unitid identifier="63910977">1734</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1979-004(1316)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-682c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Katwijkse duingebied, onderzoek naar alternatieven uitgaande van de Wassenaarse Wetering dan wel de Andelse Maas voor infiltratie.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63910978">674</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/117(246)</unitid>
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                            <unittitle>Kedichem, het herhaaldelijk voorkomen van een olie-achtige substantie en een te hoog ijzergehalte in het water gedistribueerd door de drinkwater-leiding De Lingemond.</unittitle>
                            <unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                            <unitdate calendar="gregorian" normal="1941/1957" era="ce">1941-1957</unitdate>
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                            <did>
                              <unitid identifier="63910980">792</unitid>
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                              <unittitle>Modelproef in verband met de duinbevloeiing,<unitdate calendar="gregorian" normal="1941" era="ce">1941</unitdate>
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                              <unitid identifier="63910981">1044</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/137(655)</unitid>
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                              <unittitle>Modelproef ten behoeve van de westelijke duinbevloeiing,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                          <did>
                            <unitid identifier="63910982">374</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/42</unitid>
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                            <unittitle>Leidschendam, gemeente; chemisch onderzoek van het drinkwater van de nooddrinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
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                          <did>
                            <unitid identifier="63910983">929</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/309(576)</unitid>
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                            <unittitle>Maasland, gemeente; onderzoek betreffende de bemaling van de bouwput van een te bouwen kunstwerk en de koelwatervoorziening hiervoor.</unittitle>
                            <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1695, 3035</unitid>
                            <unittitle>Noordwijk.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910986">3035</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6834-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Geo-electrisch onderzoek rondom de voormalige vuilstort uitgevoerd door de dienst Grondwaterverkenning TNO in opdracht van de RID,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                            <did>
                              <unitid identifier="63910987">1695</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1979-1(28)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6835-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Oriënterend onderzoek naar organische microverontreinigingen in het grondwater bij de vuilstortplaats door drs. C.F.H. Morra, ir. W. van Duijvenbooden, P. Slingerland en G.J. Piet,<unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>810, 813</unitid>
                            <unittitle>Oostvoorne.</unittitle>
                            <unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                            <did>
                              <unitid identifier="63910989">810</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/097(366)</unitid>
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                              <unittitle>Nader onderzoek naar de te verwachten invloed van een watervang in de duinen,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                            <did>
                              <unitid identifier="63910990">813</unitid>
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                              <unittitle>Rapport uitgebracht door J. Hofker aan het Administratiefonds Rotterdam inzake een nadere beschouwing inzake  de te verwachten invloed van een watervang in de duinen,<unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                            <unitdate calendar="gregorian" normal="1916/1983" era="ce">1916-1983</unitdate>
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                            <did>
                              <unitid identifier="63910992">499</unitid>
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                              <unittitle>Voorlopig onderzoek naar de omvang waarin het mogelijk en wenselijk is van het sinds 1 januari 1914  aan de gemeente toegevoegde gebied te Hoek van Holland van goed drinkwater te voorzien door het inrichten van een in de nabijheid gelegen grondwatervang,<unitdate calendar="gregorian" normal="1916" era="ce">1916</unitdate>
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                              <unittitle>Rapport inzake het onderzoek op het waterwerk van de drinkwaterleiding van de gemeente,<unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
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                            <did>
                              <unitid identifier="63910994">1411</unitid>
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                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-683c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Resultaten van een oriënterend onderzoek naar vluchtige organische verbindingen in de binnenlucht en kruipruimten van de Oostpoortschool door drs. E. de Greef, dr. W.C.M.M. Luijten en P. Slingerland,<unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
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                          <did>
                            <unitid identifier="63910996">1267</unitid>
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                            <unittitle>Rozenburgse Sluis, onderzoek inzake de bemaling van de bouwput.</unittitle>
                            <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                          <did>
                            <unitid identifier="63910998">1221</unitid>
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                            <unittitle>Spijkenisse, bemaling van de bouwput voor de Voornse Sluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                          <did>
                            <unitid identifier="63910999">783</unitid>
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                            <unittitle>Voorburgsche Waterleidingmaatschappij NV, het ontkleuren van water door middel van collactivit<lb></lb>.</unittitle>
                            <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
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                            <did>
                              <unitid identifier="63911001">646</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/090(177)</unitid>
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                              <unittitle>Afzanding van duinen,<unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911002">1006</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/121(511)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6842-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Resultaten van zuiveringsproeven op het pompstation aan de Papeweg,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911003">942</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/226(487)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6843-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zandvoort, nota inzake de van maart tot december 1949 verrichte filterproeven op semi-technische schaal ten behoeve van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
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                            <unittitle>Zuid-Holland, provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1976/1981" era="ce">1976-1981</unitdate>
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                            <did>
                              <unitid identifier="63911005">195</unitid>
                              <unitid audience="internal" type="obsolete">74-83/222</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6845-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Het uitvoeren van grondboringen en het afwerken hiervan tot blijvende waarnemingsputten in het kader van een in te richten landelijk meetnet voor de grondwaterkwaliteit,<unitdate calendar="gregorian" normal="1976/1979" era="ce">1976-1979</unitdate>
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                            <did>
                              <unitid identifier="63911007">227</unitid>
                              <unitid audience="internal" type="obsolete">74-83/228</unitid>
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                              <unittitle>Uitvoeren van boringen en het afwerken hiervan tot blijvende waarnemingsputten in het kader van het uit te voeren onderzoek kwaliteitsvariaties,<unitdate calendar="gregorian" normal="1980/1981" era="ce">1980-1981</unitdate>
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                          <did>
                            <unitid>993, 1631</unitid>
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                            <unitdate calendar="gregorian" normal="1956/1977" era="ce">1956-1977</unitdate>
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                            <did>
                              <unitid identifier="63911010">993</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/152(624)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6848-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake het te verwachten waterverbruik in de gemeente en de daarmee samenhangende uitbreiding van de capaciteit van de pompinstallatie en van het distributienet van het gemeentelijk waterbedrijf,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911011">1631</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1977-001(1255)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6849-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Boorprogramma 1977 inzake pompputten van het Gemeentelijk Waterleidingbedrijf,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                              </unittitle>
                            </did>
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                        </c>
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                        <did>
                          <unitid type="series_code">1.6.02.9</unitid>
                          <unittitle>Zeeland</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911014">873</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/128(548)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-684b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Biggekerke, mogelijkheid van infiltratie van rein water in het waterwingebied van de NV Waterleidingmaatschappij Midden-Zeeland.</unittitle>
                            <unitdate calendar="gregorian" normal="1953" era="ce">1953</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911015">1604</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1022)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-684c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Deltagebied, nota inzake de raming van de toekomstige waterbehoefte van bevolking en industrie.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911016">1627</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/516(1250)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-684d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Fikkersdries, aanvullende berekeningen inzake de invloed van een slootpeilverhoging.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911017">1452</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1972-001(1107)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-684e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grevelingenbekken, nota inzake de te verwachten afvlakking van het chloridegehalte.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911018">964</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/318(603)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-684f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Kruiningen, verslag inzake een modelonderzoek met betrekking tot de dijk langs de nieuwe Veerhaven.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911019">962</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/128(600)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6850-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Midden-Zeeland en Middelburg, nota's inzake het toekomstige watertransport van Goes naar Walcheren.</unittitle>
                            <unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911020">996</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/050(627)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6851-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Middelburg, gemeente waterleiding; nota inzake de ontzilting van de waterwinplaats Oranjezon.</unittitle>
                            <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911021">1601</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-023(1225)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6852-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oosterschelde, pompproef werkhaven Neeltje Jans.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>504, 1384</unitid>
                            <unittitle>Schouwen.</unittitle>
                            <unitdate calendar="gregorian" normal="1917/1971" era="ce">1917-1971</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63911023">504</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/039(32)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6854-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Voorlopig grondwater- en bodemonderzoek in het duingebied nabij Haamstede,<unitdate calendar="gregorian" normal="1917" era="ce">1917</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911024">1384</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/039(1073)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6855-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Pompproeven in het kader van een onderzoek ter verkrijging van gegevens over de ondergrond in het duingebied,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911026">815</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/168(368)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6856-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vlissingen, rapport Vlissingen uitgebracht aan de Commissie Grenswijziging Vlissingen door Chr. van Paassen, G.J. van den Berg en L. van Vuuren.</unittitle>
                            <unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911027">517</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/050(44)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6857-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vrouwenpolder, gemeente; grondwater- en bodemonderzoek in het aan de gemeente Middelburg toebehorende duingebied gelegen bij de Oranjezon.</unittitle>
                            <unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911028">1602</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1976-006(1226)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6858-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Waarde, onderzoek naar oorzaken van stankoverlast op en nabij de Westerschelde.</unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911029">998</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/052(629)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6859-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zealand Flanders, report on investigations of groundwater movement and related problems by means of a horizontal slit model (viscous flow analogy).</unittitle>
                            <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Zeeuwsch-Vlaanderen.</unittitle>
                            <unitdate calendar="gregorian" normal="1919/1954" era="ce">1919-1954</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911031">519</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/052(47)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-685b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Grondwateronderzoek,<unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911032">572</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/184(134)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-685c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport inzake de rentabiliteit van het waterleidingplan,<unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911033">934</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/301(581)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-685d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de mogelijkheid van aanvoer van water uit West-Noord-Brabant ten behoeve van de watervoorziening,<unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911034">573</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/052(135)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-685e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zeeuwsch-Vlaamsche Waterleidingmaatschappij NV, keuze van de drijfkracht voor de pompstations.</unittitle>
                            <unitdate calendar="gregorian" normal="1928" era="ce">1928</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Bemaling van bouwputten.</unittitle>
                            <unitdate calendar="gregorian" normal="1957/1983" era="ce">1957-1983</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63911036">1084</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/368(713)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6860-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Bruinisse,<unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911037">1097</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/355(677)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6861-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Haringvliet (Spuisluis),<unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911038">1268</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/450(926)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6862-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Kreekraksluizen in de Schelde-Rijnverbinding,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911039">1318</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1981-001(1371)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6863-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nieuwe schutsluizen te Hansweert,<unitdate calendar="gregorian" normal="1981" era="ce">1981</unitdate>
                              </unittitle>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911041">140</unitid>
                              <unitid audience="internal" type="obsolete">74-83/162</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6864-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Oosterschelde; bemaling van bouwputten Schaar en Roompot, het onderzoeken van het te verwachten waterbezwaar en de inrichting van de bemaling van de bouwput Schaar,<unitdate calendar="gregorian" normal="1976/1983" era="ce">1976-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911043">1693</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/535(1296)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6865-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Oosterschelde, waterbezwaar en de inrichting van de bemaling van de bouwput Schaar,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                            </did>
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                            <did>
                              <unitid identifier="63911044">147</unitid>
                              <unitid audience="internal" type="obsolete">74-83/170</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6866-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Schaar in de Oosterschelde en de Philipsdam,<unitdate calendar="gregorian" normal="1978/1980" era="ce">1978-1980</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911046">1636</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/513(1260)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6867-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Vlaketunnel,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911047">1047</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1957-007(658)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6868-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Zandkreek (Kortgene),<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911048">1149</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/395(777)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6869-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Zuid-Sloe,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                            </did>
                          </c>
                        </c>
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                          <unittitle>Noord-Brabant</unittitle>
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                          <did>
                            <unitid identifier="63911050">144</unitid>
                            <unitid audience="internal" type="obsolete">74-83/173</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-686b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Het uitvoeren van diverse boringen ten behoeve van het bodemonderzoek in de provincie.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1983" era="ce">1978-1983</unitdate>
                            <physdesc>
                              <extent>pak</extent>
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                          <did>
                            <unitid identifier="63911051">1421</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1983-011(1418)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-686c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Grondwateraanvulling in westelijk Noord-Brabant en de provincie Antwerpen opgesteld door ing. M.H.A. Juhasz-Holterman en ir. J.H.C. Mülschlegel.</unittitle>
                            <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
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                            <unitid>217, 965</unitid>
                            <unittitle>Bergen op Zoom.</unittitle>
                            <unitdate calendar="gregorian" normal="1955/1977" era="ce">1955-1977</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911053">965</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/060(604)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-686e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de vergroting van de transportcapaciteit van de gemeentewaterleiding,<unitdate calendar="gregorian" normal="1955" era="ce">1955</unitdate>
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                            <did>
                              <unitid identifier="63911054">217</unitid>
                              <unitid audience="internal" type="obsolete">74-83/155</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-686f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Uitvoeren van boringen op het terrein van het waterwingebied de Mondaf,<unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
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                        </c>
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                          <did>
                            <unitid identifier="63911055">746</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/081(387)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6870-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Borne, waterleiding van de gemeente; onderzoek op het pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1943" era="ce">1943</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911056">1051</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/018(662)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6871-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Boxtel, nota inzake het te verwachten waterverbruik en het daarmede verband houdende transport.</unittitle>
                            <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911057">1120</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/374(754)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6872-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Breda, geohydrologisch onderzoek ten behoeve van de bouw van een onderdoorgang ter plaatse van het Oranjeplein.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911058">1253</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/085(904)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6873-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Budel, de te verwachten grondwaterstandverlagingen ten gevolge van de wateronttrekking door het pompstation van de Waterleidingmaatschappij Oost-Brabant.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911059">1209</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/415(851)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6874-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Dintelsas, onderzoek naar het waterbezwaar in de bouwput voor de uitwaterings- en schutsluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                          </did>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Eindhoven.</unittitle>
                            <unitdate calendar="gregorian" normal="1961/1982" era="ce">1961-1982</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911062">1158</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/370(781)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6876-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake een onderzoek naar de oorzaken van de ondervonden moeilijkheden bij de bemaling van de rioolwaterzuiveringsinstallatie,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911064">1388</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/012(1076)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6877-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de pompproef in het diepe watervoerende pakket op de waterwinplaats Aalsterweg,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911065">1456</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1972-001(1109)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6878-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterbalans,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911067">160</unitid>
                              <unitid audience="internal" type="obsolete">74-83/184</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6879-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Het uitvoeren van een boring en het afwerken hiervan tot blijvende pomp/waarnemingsput,<unitdate calendar="gregorian" normal="1981/1982" era="ce">1981-1982</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911068">1338</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1982-003(1391)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-687a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek ten behoeve van de ontwatering van de ingraving voor Rijksweg 58,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911070">1353</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/012(1043)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-687b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Geldrop, nota inzake de mogelijkheden van berging en infiltratie op de Groote Heide.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911071">980</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/341(611)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-687c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Goor, nota inzake de technische aspecten van het gemeentelijk waterleidingbedrijf.</unittitle>
                            <unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911072">1447</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/301</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-687d-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Halsteren, geo-elektrisch onderzoek naar de ligging van de grens zoet-zout water in het westelijk deel.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911073">1053</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/153(664)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-687e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>'s-Hertogenbosch en Vught, berekening van de vermindering van energieverlies in de aanvoerleidingen indien de groep Oisterwijk uit het voorzieningsgebied zou wegvallen.</unittitle>
                            <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911074">1487</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/153(981)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-687f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>'s-Hertogenbosch, gemeente; nota inzake de transportcapaciteit van het waterleidingdistributienet.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911075">515</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/230(43)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6880-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hoeven, gemeente; onderzoek van de bodem alsmede over het watergevend vermogen der aangeboorde grondlagen en over de hoedanigheid en de zuivering van het water nabij Halte Seppe.</unittitle>
                            <unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911076">1764</unitid>
                            <unitid audience="internal" type="obsolete">R19-83/1980-005(1347)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6881-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Hollandsdiep, onderzoek naar organische componenten van rivierslib afkomstig uit het Hollandsdiep nabij Moerdijk verricht door ing. A.C. den Boer en dr. F.J.J. Brinkmann.</unittitle>
                            <unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911077">194</unitid>
                            <unitid audience="internal" type="obsolete">74-83/220</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6882-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Huijbergen en Woensdrecht, gemeenten; het uitvoeren van snelheidsmetingen in pomputten.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911078">624</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/005(164)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6883-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Land van Heusden en Altena, beknopte samenvatting van de resultaten van het onderzoek naar de mogelijkheid van een centrale drinkwatervoorziening.</unittitle>
                            <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911079">1279</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(938)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6884-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Lith, afvoeren van de Maas als grondslag voor de capaciteitsberekening van de reservoirs in de Biesbosch.</unittitle>
                            <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>155-156</unitid>
                            <unittitle>Oost-Noord-Brabant, het uitvoeren van boringen en het afwerken daarvan tot blijvende waarnemingsputten in de Centrale Slenk in het kader van het regionaal onderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911081">155</unitid>
                              <unitid audience="internal" type="obsolete">74-83/180</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6886-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911082">156</unitid>
                              <unitid audience="internal" type="obsolete">74-83/180</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6887-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Uitvoering werk,<unitdate calendar="gregorian" normal="1981/1983" era="ce">1981-1983</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911083">1087</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/003(716)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6888-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Putte-Bergen op Zoom (Brabantse Wal), nota inzake de mogelijkheden van wateronttrekking op grote schaal in het gebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911085">680</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/140(253,254)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6889-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Roosendaal, vergroting van de capaciteit van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1936/1938" era="ce">1936-1938</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911086">1739</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/548(1321)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-688a-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Schijndel, analyse van grondwaterstanden in de omgeving van het pompstation Ir. A.J. Stuurman.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>594, 1354</unitid>
                            <unittitle>Tilburgse waterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1926/1970" era="ce">1926-1970</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911089">594</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/118(104)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-688c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek omtrent het watergevend vermogen van de uitbreiding van de prise d'eau en de pompwerken,<unitdate calendar="gregorian" normal="1926" era="ce">1926</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911091">1354</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/118(1044)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-688d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Investeringen ter vergroting van haar produktie- en distributievermogen, alsmede naar de daaruit voortvloeiende kostenstijgingen respectievelijk verhoging harer tarieven,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1320, 1661</unitid>
                            <unittitle>Ulvenhout.</unittitle>
                            <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63911093">1661</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/530(1290)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-688f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Het houden van drainproeven ten behoeve van de bemaling van een diep gelegen gedeelte van Rijksweg 58,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
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                              <unittitle>Nota inzake de gevolgen van de normalisatie van de rivier de Aa op de grondwaterstand in de omgeving,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                            <unittitle>Waalwijk, gemeente; het uitvoeren van boringen en het afwerken daarvan tot blijvende waarnemingsputten in de omgeving van het waterwingebied.</unittitle>
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                          <did>
                            <unitid identifier="63911105">832</unitid>
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                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-689b-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Amby, nota inzake de te verwachten invloed op de stijghoogte van het grondwater door een debietsvermeerdering van de winplaats IJzeren Kuilen van de NV Waterleidingmaatschappij voor Zuid-Limburg.</unittitle>
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                          <did>
                            <unitid identifier="63911106">817</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/202(370)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-689c-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Eijgelshoven, Nieuwenhagen en Ubach, gemeenten; het optreden van lekken in de hoofdleidingnetten van de drinkwaterleidingen over Worms en de buurtschap Hopel.</unittitle>
                            <unitdate calendar="gregorian" normal="1942" era="ce">1942</unitdate>
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                          <did>
                            <unitid identifier="63911108">1666</unitid>
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                            <unittitle>Geulle, rapport over de uitkomsten van een pompproef nabij de Maas opgemaakt door de hydroloog J. Versluys.</unittitle>
                            <unitdate calendar="gregorian" normal="1919" era="ce">1919</unitdate>
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                          <did>
                            <unitid identifier="63911110">1493</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/469(985)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-689e-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Heel en Panheel en Beegden, gemeenten; onderzoek naar de hydrologische gevolgen van de winning van grind.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                          <did>
                            <unitid identifier="63911111">1359</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1050)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-689f-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Itteren en Borgharen, onderzoek naar de mogelijkheid van de aanleg van spaarbekkens.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            <unitid>div.nrs.</unitid>
                            <unittitle>Linne.</unittitle>
                            <unitdate calendar="gregorian" normal="1952/1968" era="ce">1952-1968</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911113">1015</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/282(517)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de bemaling van de bouwput voor het ontworpen waterkrachtwerk in de Maas,<unitdate calendar="gregorian" normal="1952" era="ce">1952</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911114">1191</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1962-012(822)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Pompproeven bij de bouwputten voor de dubbele schutsluis en de waterkrachtcentrale,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911115">1448</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/454(960)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a3-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Bemaling van de bouwput voor de nieuwe sluis,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911116">1210</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1963-018(852)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Maasdal, hydrogeologisch en geo-elektrisch onderzoek in het Maasdal tussen Gronsveld en Eysden.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911117">1463</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/493(1113)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Maastricht, nota inzake een onderzoek naar de waterdichtheid van de Beatrixhaven.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                          <did>
                            <unitid>1461, 1544</unitid>
                            <unittitle>Margraten, massief van.</unittitle>
                            <unitdate calendar="gregorian" normal="1972/1974" era="ce">1972-1974</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911119">1461</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/220(1112)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Onderzoek naar de hydrologische gevolgen van de centrale mergelwinning,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911120">1544</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1974-032(1171)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68a8-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake het regime van het freatisch grondwater,<unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                            </did>
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                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>1562, 1681</unitid>
                            <unittitle>Oostrumse Beek.</unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911122">1562</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1975-008(1194)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68aa-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterbalansstudie van het stroomgebied,<unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
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                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911123">1681</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/528(1294)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68ab-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Interne nota enkele methoden om de nuttige neerslag te berekenen toegepast op het stroomgebied.</unittitle>
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                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911125">1495</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/473(986)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68ac-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Oranje Nassau Mijnen, nota inzake de gevolgen van de afgraving beneden de grondwaterstand van het zilverzandgebied op de waterhuishouding van het af te graven gebied en de omgeving.</unittitle>
                            <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                          </did>
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                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Panheel.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1982" era="ce">1973-1982</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911128">1497</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/469(1133)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68ae-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake een onderzoek naar het waterverlies uit het Kanaal van Wessem naar Nederweert,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911130">1612</unitid>
                              <unitid audience="internal" type="obsolete">R19-83/1976-006(1230)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68af-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota inzake de resultaten van een pomp- en stopproef ten behoeve van het grindgatenonderzoek,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911131">1381</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1982-021(1394)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De onttrekkingsmogelijkheden van Maaswater ten behoeve van het spaarbekken,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911133">1382</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1982-021(1395)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Een waterkwaliteitsmodel voor het spaarbekken,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
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                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911134">1327</unitid>
                              <unitid audience="internal" type="obsolete">R16-83/1982-004(1393)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Interimrapport over deelname tot 1 februari 1982 aan het onderzoek naar de inrichtingsmogelijkheden voor het grindgat als spaarbekken,<unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911136">804</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/215(409)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Roermond, onderzoek van het leidingnet van de NV Industriële Maatschappij (onderdeel van de waterleiding).</unittitle>
                            <unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911137">1582</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/261(1016)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Roosteren, pompproef ten behoeve van een onderzoek naar de mogelijkheden van oeverinfiltratie.</unittitle>
                            <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911139">1361</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/484(1052)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Venlo en Tegelen, nota inzake de gevolgen van de ontgraving tot beneden de grondwaterspiegel van gedeelten van een complex kleigroeven in het gebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            <unittitle>Venray-Horst, verslagen van de modelproeven betreffende de watervoorziening van het proefgebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1957/1960" era="ce">1957-1960</unitdate>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911141">1093</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/351(722)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b7-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1959" era="ce">1959</unitdate>
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                            <did>
                              <unitid identifier="63911142">1135</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/351(760)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b8-79fa-e053-09f0900a5ea8</unitid>
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                                <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63911143">1056</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/351(667)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68b9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1957/1958" era="ce">1957-1958</unitdate>
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                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911144">1162</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/324(784)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68ba-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Weert, geohydrologisch onderzoek ten behoeve van de grondwaterwinplaats van de gemeentebedrijven.</unittitle>
                            <unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.6.02.12</unitid>
                          <unittitle>Flevoland</unittitle>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911146">1272</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/349(930)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68bc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bremerberg (Oostelijk-Flevoland), nota inzake de verlagingen van de grondwaterstand ten gevolge van de onttrekking op het pompstation.</unittitle>
                            <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
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                        <c level="file">
                          <did>
                            <unitid identifier="63911148">1041</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/124(305)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68bd-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>IJsselmeer, verslag betreffende de resultaten van een diepe boring.</unittitle>
                            <unitdate calendar="gregorian" normal="1939" era="ce">1939</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>237-240</unitid>
                            <unittitle>IJsselmeerpolders, uitkomsten van het chemisch onderzoek van watermonsters.</unittitle>
                            <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63911151">237</unitid>
                              <unitid audience="internal" type="obsolete">74-83/245</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68bf-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911152">238</unitid>
                              <unitid audience="internal" type="obsolete">74-83/246</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68c0-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911153">239</unitid>
                              <unitid audience="internal" type="obsolete">74-83/247</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68c1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63911154">240</unitid>
                              <unitid audience="internal" type="obsolete">74-83/248</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68c2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911155">1671</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1970-1(9)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68c3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Ketelmeer, niet-stationaire grondwaterstroming in het Hollandse profiel en kwelberekening spaarbekken door ir. G.A. Bruggeman.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911156">936</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/133(583)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68c4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Lelystad, nota inzake de uitvoering van de bronbemaling van de bouwput voor een gemaal en een schutsluis nabij het toekomstige stad.</unittitle>
                            <unitdate calendar="gregorian" normal="1954" era="ce">1954</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63911157">1230</unitid>
                            <unitid audience="internal" type="obsolete">R16-83/1964-021(876)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-68c5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Zuidelijk-Flevoland, geo-elektrisch onderzoek in het randgebied door Rijkswaterstaat.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
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                  <did>
                    <unitid type="series_code">167</unitid>
                    <unittitle>Het begeleiden van (wetenschappelijk) onderzoek betreffende het beleidsterrein (drink)watervoorzieningen.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Product: Notities, notulen, brieven.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63909076">303</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/38</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6176-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het bestuderen van krop (struma) en het bestrijden van deze ziekte door toevoeging van jodium aan het drinkwater, brood en keukenzout.</unittitle>
                      <unitdate calendar="gregorian" normal="1933/1964" era="ce">1933-1964</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909077">744</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/248(383)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6177-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de hoedanigheid van het rivierwater der Nieuwe Maas 1943-1944 door het Rijksinstituut voor Zuivering van Afvalwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1944" era="ce">1944</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909079">1020</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/344(640)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6178-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Rapport samengesteld door de Commissie Infiltratie van de N.V. Keuringsinstituut voor Waterleidingartikelen inzake infiltratie van oppervlaktewater.</unittitle>
                      <unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909080">292</unitid>
                      <unitid audience="internal" type="obsolete">A 13-73/23</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6179-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan het door het Keuringsinstituut voor Waterleidingartikelen in te zetten speurwerk ten behoeve van organische verontreinigingen en het voorkomen en verwijderen van virussen.</unittitle>
                      <unitdate calendar="gregorian" normal="1961/1963" era="ce">1961-1963</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909081">1170</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1962-025(805)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-617a-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Rapport van het Geo-elektrisch onderzoek in Noord-Holland door Rijkswaterstaat.</unittitle>
                      <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909082">1172</unitid>
                      <unitid audience="internal" type="obsolete">R09-80/426(798)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-617b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek Twente-Rijnkanaal.</unittitle>
                      <unitdate calendar="gregorian" normal="1962/1963" era="ce">1962-1963</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909083">1203</unitid>
                      <unitid audience="internal" type="obsolete">R16-83/1963-017</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-617c-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Geo-elektrisch en geologisch onderzoek van de polder Geestmerambacht door ir. J.C. van Dam en mej. dr. S. Jelgersma van Rijkswaterstaat, Dienst voor de Waterhuishouding, Geologische Dienst.</unittitle>
                      <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909084">294</unitid>
                      <unitid audience="internal" type="obsolete">A13-73/25</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-617d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Diverse onderzoeken naar de kwaliteit van het zeewater en de oppervlaktewateren in Nederland.</unittitle>
                      <unitdate calendar="gregorian" normal="1970/1972" era="ce">1970-1972</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909085">183</unitid>
                      <unitid audience="internal" type="obsolete">74-83/208</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-617e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan het modelonderzoek Groote Heide bij de gemeente Eindhoven ten behoeve<lb></lb>van de waterwinning.</unittitle>
                      <unitdate calendar="gregorian" normal="1971/1978" era="ce">1971-1978</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909086">59</unitid>
                      <unitid audience="internal" type="obsolete">74-83/71</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-617f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoeken naar de mogelijkheden tot hergebruik van afvalwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909087">54</unitid>
                      <unitid audience="internal" type="obsolete">74-83/66</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6180-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met de Belgische Aardrijkskundige Dienst over het geohydrologisch onderzoek en de grondwaterwinning in België en Nederland.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909088">50</unitid>
                      <unitid audience="internal" type="obsolete">74-83/64</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6181-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met de Universiteit Utrecht met betrekking tot het onderzoeksprogramma reuk en toxiciteit van drinkwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909089">241</unitid>
                      <unitid audience="internal" type="obsolete">74-83/249</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6182-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Begeleiding van onderzoeken van zand- en slibmonsters.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Verwachte ontwikkelingen van het industrieel waterverbruik.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63909091">83</unitid>
                        <unitid audience="internal" type="obsolete">74-83/80</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6184-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Algemeen,<unitdate calendar="gregorian" normal="1973/1980" era="ce">1973-1980</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909092">2713</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6185-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Aardolie-industrie,<unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909094">2716</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6186-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Chemische industrie,<unitdate calendar="gregorian" normal="1974/1977" era="ce">1974-1977</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909095">2714</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6187-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Frisdrankenindustrie,<unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909096">2712</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6188-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Groente- en fruitverwerkende industrie,<unitdate calendar="gregorian" normal="1973/1978" era="ce">1973-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909097">2928</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6189-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Metaalindustrie,<unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909098">2929</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-618a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Papierindustrie,<unitdate calendar="gregorian" normal="1973/1977" era="ce">1973-1977</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909099">2724</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-618b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Pluimveeslachterijen,<unitdate calendar="gregorian" normal="1973/1978" era="ce">1973-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909100">2726</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-618c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Suikerfabrikanten,<unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909101">2727</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-618d-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vlees- en vleeswarenindustrie,<unitdate calendar="gregorian" normal="1973/1978" era="ce">1973-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909102">2715</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-618e-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Voedings- en genotmiddelen (brouwerijen),<unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909103">2930</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-618f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Zetmeelindustrie,<unitdate calendar="gregorian" normal="1974/1976" era="ce">1974-1976</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>87-89, 97</unitid>
                        <unittitle>Rapporten.<unitdate calendar="gregorian" normal="1975/1980" era="ce">1975-1980</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63909105">87</unitid>
                          <unitid audience="internal" type="obsolete">74-83/81</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6191-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1975 - 1976<unitdate calendar="gregorian" normal="1975/1976" era="ce">1975-1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909106">88</unitid>
                          <unitid audience="internal" type="obsolete">74-83/81</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6192-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1977<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909107">97</unitid>
                          <unitid audience="internal" type="obsolete">74-83/85</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6193-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1977/1978" era="ce">1977-1978</unitdate>
                          </unittitle>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909108">89</unitid>
                          <unitid audience="internal" type="obsolete">74-83/81</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6194-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>1980<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>61-63</unitid>
                      <unittitle>Onderzoek naar het hergebruik van afvalwater met behulp van een proefinstallatie in de gemeente Dordrecht.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1981" era="ce">1973-1981</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63909110">61</unitid>
                        <unitid audience="internal" type="obsolete">74-83/74</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6196-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderingen ten behoeve van coördinatie en voortgang van de werkzaamheden,<unitdate calendar="gregorian" normal="1973/1981" era="ce">1973-1981</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909112">62</unitid>
                        <unitid audience="internal" type="obsolete">74-83/74</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6197-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Ontzoutingsunit (zuivering door middel van hyperfiltratie),<unitdate calendar="gregorian" normal="1974/1981" era="ce">1974-1981</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63909113">63</unitid>
                        <unitid audience="internal" type="obsolete">74-83/74</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6198-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Bouw, benodigdheden en werkzaamheden,<unitdate calendar="gregorian" normal="1977/1979" era="ce">1977-1979</unitdate>
                        </unittitle>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909114">55</unitid>
                      <unitid audience="internal" type="obsolete">74-83/67</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6199-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Verlenen van medewerking aan het ontwikkelen van mathematische waterkwaliteitsmodellen voor rivieren.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1975" era="ce">1974-1975</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909115">56</unitid>
                      <unitid audience="internal" type="obsolete">74-83/68</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-619a-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met het Waterloopkundig Laboratorium te Delft in het kader van het project Waterkwaliteitsmodel Rijn.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1977" era="ce">1974-1977</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909116">113</unitid>
                      <unitid audience="internal" type="obsolete">74-83/13</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-619b-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met de Dutch State Mines (DSM) over toxiciteitsmonitoring.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1978" era="ce">1974-1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909117">182</unitid>
                      <unitid audience="internal" type="obsolete">74-83/209</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-619c-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan het modelonderzoek Groote Heide bij de gemeente Eindhoven ten behoeve<lb></lb>van de waterwinning.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1980" era="ce">1974-1980</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909118">95</unitid>
                      <unitid audience="internal" type="obsolete">74-83/82</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-619d-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek naar de invloed van de prijs en de bemetering op het huishoudelijk waterverbruik.</unittitle>
                      <unitdate calendar="gregorian" normal="1974/1980" era="ce">1974-1980</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909119">57</unitid>
                      <unitid audience="internal" type="obsolete">74-83/69</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-619e-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Samenwerking met de Directie Waterhuishouding en Waterbeweging van de Rijkswaterstaat in het kader van het project Waterkwaliteitsmodel Rijn.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1977" era="ce">1975-1977</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909120">121</unitid>
                      <unitid audience="internal" type="obsolete">74-83/104</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-619f-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan het toxiteitsonderzoek met zoetwaterorganismen.</unittitle>
                      <unitdate calendar="gregorian" normal="1975/1982" era="ce">1975-1982</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909121">142</unitid>
                      <unitid audience="internal" type="obsolete">74-83/166</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a0-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Een hydrologische verkenning van de provincie Groningen.</unittitle>
                      <unitdate calendar="gregorian" normal="1977/1983" era="ce">1977-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909122">1652</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1978-004(1279)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a1-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Geo-elektrisch onderzoek in de omgeving van Doetinchem door de dienst Grondwaterverkenning TNO.</unittitle>
                      <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909123">145</unitid>
                      <unitid audience="internal" type="obsolete">74-83/169</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a2-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Geohydrologische aspecten van de bemaling van een bouwput in de gemeente Haarle.</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1979" era="ce">1978-1979</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909124">104</unitid>
                      <unitid audience="internal" type="obsolete">74-83/88</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a3-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het onderzoeken van de knelpunten in de openbare watervoorziening van de provincie Overijssel.</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909126">126</unitid>
                      <unitid audience="internal" type="obsolete">74-83/109</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a4-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Het verlenen van medewerking aan een onderzoek naar de reductie van virussen bij desinfectie van effluenten van<lb></lb>afvalwaterzuiveringsinstallaties.</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909127">256</unitid>
                      <unitid audience="internal" type="obsolete">74-83/264</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a5-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek inzake het analyseren van watermonsters.</unittitle>
                      <unitdate calendar="gregorian" normal="1978/1981" era="ce">1978-1981</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909128">2963</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a6-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Mutageniteitsonderzoek van drinkwater.</unittitle>
                      <unitdate calendar="gregorian" normal="1980/1983" era="ce">1980-1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909129">3052</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a7-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Bijdrage van de RID aan het geologisch onderzoek van twee zoutstructuren onder de Noordzee inzake de mogelijkheid van het definitief opbergen van radioactief afval, uitgevoerd door de Rijks Geologische Dienst.</unittitle>
                      <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909130">34</unitid>
                      <unitid audience="internal" type="obsolete">74-83/49</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a8-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Notitie opgesteld door ir. F. Langeweg ten behoeve van het project onderbouwing harmonisatie normstelling.</unittitle>
                      <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                    </did>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63909131">1424</unitid>
                      <unitid audience="internal" type="obsolete">R19-83/1983-009(1421)</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61a9-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Resultaten van het onderzoek op en nabij de terreinen van DSM op verzoek van de hoofdinspecteur van de Volksgezondheid uitgevoerd aan water uit de bergingsvijver opgesteld door dr. F.J.J. Brinkmann.</unittitle>
                      <unitdate calendar="gregorian" normal="1983" era="ce">1983</unitdate>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">168</unitid>
                    <unittitle>Het verzamelen en bewerken van gegevens ten behoeve van (wetenschappelijk) onderzoek betreffende het beleidsterrein (drink) watervoorzieningen</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Product: Boorstaten van onder meer brandputten, waterleidingen, rijkswaterstaat en Zuiderzeewerken.
</item>
                      <item>Opm.: 1: Bijvoorbeeld van door verschillende autoriteiten en particulieren aangeleverde grond- en watermonsters ten behoeve van het geologisch- en geohydrologisch archief.<lb></lb>2: Handeling 1538 uit BSD Milieubeheer komt met het bovenstaande voorbeeld overeen: Het verzamelen, bewerken en beheren van door verschillende autoriteiten en particulieren aangeleverde grond- en watermonsters ten behoeve van het geologisch- en geohydrologisch archief.<lb></lb>Het geologisch en geo-hydrologisch archief was ondergebracht bij de Rijks Geologische Dienst. Het RID had een<lb></lb>kopie.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.7</unitid>
                      <unittitle>HET VERZAMELEN EN BEWERKEN VAN GEGEVENS VAN (WETENSCHAPPELIJK) ONDERZOEK INZAKE (DRINK) WATERVOORZIENING</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.7.01</unitid>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63909141">326</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/63</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Opbouw en aankoop van geohydrologisch archief en grondmonsters.</unittitle>
                          <unitdate calendar="gregorian" normal="1914/1972" era="ce">1914-1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909142">701</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/098(192)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Geohydrologisch onderzoek van de ontworpen winplaats der waterleiding van Paramaribo.</unittitle>
                          <unitdate calendar="gregorian" normal="1932" era="ce">1932</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909143">723</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/156(290)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake geohydrologisch onderzoek ondiep grondwater.</unittitle>
                          <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909144">283</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/14</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Uitvoeren van modelproeven ten behoeve van het oplossen van verschillende geohydrologische problemen.</unittitle>
                          <unitdate calendar="gregorian" normal="1940/1971" era="ce">1940-1971</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909146">284</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/15</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Bodemonderzoek door middel van geo-elektrische en geofysische metingen alsmede de samenstelling en vergaderstukken van de Werkgroep Geo-Elektrisch Onderzoek TNO.</unittitle>
                          <unitdate calendar="gregorian" normal="1950/1968" era="ce">1950-1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909147">327</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/64</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het verzamelen van gegevens voor het geohydrologisch archief over de ligging van boorputten en de samenstelling van aardlagen.</unittitle>
                          <unitdate calendar="gregorian" normal="1952/1966" era="ce">1952-1966</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909148">1236</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/443(884)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61b9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Zakelijke gegevens inzake de openbare drinkwatervoorziening in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909149">1583</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1970-027(1017)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61ba-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota regionaal geohydrologisch onderzoek door het RID.</unittitle>
                          <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>285-288</unitid>
                          <unittitle>Samenstelling en vergaderstukken van de Stuurgroep Integratie Geohydrologisch Onderzoek.</unittitle>
                          <unitdate calendar="gregorian" normal="1970/1973" era="ce">1970-1973</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63909151">285</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/16</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61bc-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 001 - 024,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63909152">286</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/17</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61bd-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 025 - 081,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63909153">287</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/18,19</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61be-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 082 - 126,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63909154">288</unitid>
                            <unitid audience="internal" type="obsolete">A13-73/20,21</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61bf-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nrs. 127 - 130,<unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909155">3118</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61c0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Onderzoek naar de aanleg van verkeersvoorzieningen in beschermde waterwingebieden door Rijkswaterstaat.</unittitle>
                          <unitdate calendar="gregorian" normal="1970/1983" era="ce">1970-1983</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909156">1367</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/489(1058)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61c1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake de toepassing van kunstmatige radioactieve tracers in de geohydrologie.</unittitle>
                          <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909157">1673</unitid>
                          <unitid audience="internal" type="obsolete">R16-83/1972-1(10)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61c2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Geohydrologie van spaarbekkens door G.A. Bruggeman.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909158">214</unitid>
                          <unitid audience="internal" type="obsolete">74-83/150</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61c3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Coördinatie van het geohydrologisch onderzoek in Nederland in samenwerking met de Rijkswaterstaat, de Rijks Geologische Dienst, het Instituut voor Cultuurtechniek en Waterhuishouding en de Dienst Grondwater Verkenning - Toegepast Natuurwetenschappelijk Onderzoek (TNO).</unittitle>
                          <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909160">49</unitid>
                          <unitid audience="internal" type="obsolete">74-83/63</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61c4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Diverse onderzoeken naar methodes om de invloeden van luchtverontreiniging op de waterkwaliteit te meten.</unittitle>
                          <unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                        </did>
                        <odd>
                          <p>met foto's</p>
                        </odd>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909163">1551</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1975-002(1179)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61c7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Regionaal geohydrologisch onderzoek IJsseldal; interimverslag inzake de resultaten van enkele uitgevoerde berekeningen.</unittitle>
                          <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63909164">1589</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/499(1213)</unitid>
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                          <unittitle>Voorlopig overzicht van de neerslagmetingen en de analyses van de neerslagmonsters.</unittitle>
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                          <unittitle>Meetnet grondwaterkwaliteit met gegevens van de provincie Noord-Brabant en de Zuidelijke IJsselmeerpolders.</unittitle>
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                          <unittitle>Transport by groundwater of radionuclides released after flooding of a repository in a salt-dome. Part one a geohydrological introduction and modelling set-up door P. Glasbergen and J.M.C. van der Vorst.</unittitle>
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                            <unittitle>Geohydrologisch onderzoek ten behoeve van een ingraving van Rijksweg 34.</unittitle>
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                            <unittitle>Onderzoek naar de hydrologische verkenning van de provincie; een beschrijving van het hydrologische regime in relatie tot de winning van grondwater.</unittitle>
                            <unitdate calendar="gregorian" normal="1979" era="ce">1979</unitdate>
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                            <unittitle>Sellingen, geohydrologisch onderzoek ten behoeve van de uitbreiding van het pompstation Ir. A. Polstra.</unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                            <unittitle>Dokkumer Nieuwe Zijlen, geohydrologisch onderzoek ten behoeve van de bemaling van de bouwput voor een nieuwe schutsluis.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                            <unittitle>Harlingen, geohydrologisch onderzoek ten behoeve van de sluisbouw.</unittitle>
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                            <unittitle>Joure en Drachten, gemeenten; het uitvoeren van twee boringen en het afwerken daarvan tot blijvende waarnemingsputten bij de onderdoorgangen in Rijksweg 43.</unittitle>
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                            <unittitle>Luxwoude, geohydrologisch onderzoek ten behoeve van de aanleg van KW31 (fietstunnel) in Rijksweg 43.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                            <unittitle>Noordbergum, geohydrologische gesteldheid van de waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
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                            <unittitle>Oppenhuizen, geohydrologisch onderzoek ten behoeve van de bemaling van de bouwputten voor de bouw van een tunnel onder het Prinses Margrietkanaal.</unittitle>
                            <unitdate calendar="gregorian" normal="1974" era="ce">1974</unitdate>
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                            <unittitle>Uitvoeren van geohydrologisch onderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1971/1975" era="ce">1971-1975</unitdate>
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                              <unitid identifier="63909204">1192</unitid>
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                              <unittitle>Stichting van een nieuwe waterwinplaats in het Valtherbos ten noorden van Emmen,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            <did>
                              <unitid identifier="63909205">1623</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/520(1246)</unitid>
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                              <unittitle>Verslag van het in 1969 uitgevoerde geohydrologische onderzoek op de waterwinplaats Westlaren,<unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                            <did>
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                              <unitid audience="internal" type="obsolete">R09-80/495(1093)</unitid>
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                              <unittitle>Nota inzake een geohydrologisch onderzoek,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                            <did>
                              <unitid identifier="63909208">1649</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/549(1276)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-61f2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Modelonderzoek inzake een aantal hydrologische aspecten van grondwaterwinning en de aanleg van een recreatiemeer,<unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                              <unitid identifier="63909210">978</unitid>
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                              <unittitle>Bouw van een spoorwegonderdoorgang,<unitdate calendar="gregorian" normal="1956" era="ce">1956</unitdate>
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                            <did>
                              <unitid identifier="63909211">1302</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/445(911)</unitid>
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                              <unittitle>Bemaling van de bouwput voor de Nieuwebrugsluis,<unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                            <did>
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                              <unitid identifier="63909228">780</unitid>
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                            <unitid identifier="63909229">1645</unitid>
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                            <unittitle>Haarle, nota inzake de geohydrologische aspecten van de bemaling van een bouwput.</unittitle>
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                            <unitid identifier="63909230">1459</unitid>
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                            <unittitle>Harculo, enige gegevens betreffende de terreindrainage ten behoeve van de IJsselcentrale.</unittitle>
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                            <unittitle>Hardenberg, gemeente; geohydrologisch onderzoek pompstation Brucht opgesteld door ir. G. Grakist en ing. W. Post.</unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
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                            <unitid identifier="63909232">779</unitid>
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                            <unittitle>Hengelo, onderzoek inzake mogelijkheden tot uitbreiding van de waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1940" era="ce">1940</unitdate>
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                            <unitid identifier="63909233">938</unitid>
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                            <unittitle>Hoge Heksel en de Herikerberg, nota inzake een geohydrologisch onderzoek van het gebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1951" era="ce">1951</unitdate>
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                          <did>
                            <unitid identifier="63909234">1647</unitid>
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                            <unittitle>Kampen, gemeente; geohydrologische situatie opgesteld door ir. C.R. Meinardi.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                            <unitid identifier="63909235">1068</unitid>
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                            <unittitle>De Koekoek, geohydrologisch onderzoek in de polder en omgeving.</unittitle>
                            <unitdate calendar="gregorian" normal="1934/1959" era="ce">1934-1959</unitdate>
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                            <unittitle>Overijssel, Waterleidingmaatschappij NV; geohydrologisch onderzoek ter bepaling van de winningscapaciteit van het pompstation Manderveen.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                                <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
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                            <unittitle>Wierden, interimrapport opgesteld door G. Grakist inzake geohydrologisch onderzoek naar de verontreiniging van het grondwater door broomverbindingen nabij het pompstation.</unittitle>
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                            <unittitle>Zwolle, geohydrologisch onderzoek ten behoeve van de bemaling van de bouwput voor het Provinciehuis.</unittitle>
                            <unitdate calendar="gregorian" normal="1964" era="ce">1964</unitdate>
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                            <unittitle>Apeldoorn, geohydrologisch onderzoek ten behoeve van de bemaling van de bouwput voor een onderdoorgang nabij de Chr. Geurtsweg.</unittitle>
                            <unitdate calendar="gregorian" normal="1965" era="ce">1965</unitdate>
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                            <unittitle>Beuningen, gemeente; geohydrologisch onderzoek ten behoeve van de mogelijke stichting van een waterwinplaats.</unittitle>
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                            <unittitle>Fikkerdries, nota inzake geohydrologische berekeningen ten behoeve van het onderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1973" era="ce">1973</unitdate>
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                            <unitid identifier="63909246">683</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/120(258)</unitid>
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                            <unittitle>Geldersche IJssel, geohydrologisch onderzoek van terreinen uitgevoerd in verband met de plannen tot kanalisering van die rivier.</unittitle>
                            <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
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                            <unittitle>Gelderland, NV Waterleidingmaatschappij.</unittitle>
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                              <unitid identifier="63909248">1139</unitid>
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                              <unittitle>Driel, geohydrologisch onderzoek ten behoeve van de waterwinplaats,<unitdate calendar="gregorian" normal="1961" era="ce">1961</unitdate>
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                              <unitid identifier="63909249">1167</unitid>
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                              <unittitle>Epe, nota inzake de geohydrologische gevolgen van de uitbreiding van de wateronttrekking door het pompstation,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
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                              <unitid identifier="63909250">1524</unitid>
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                              <unittitle>Nijkerk, gemeente; geohydrologisch onderzoek op de nieuwe waterwinplaats Holk van de NV Waterleidingmaatschappij Gelderland,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
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                              <unitid identifier="63909251">1374</unitid>
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                              <unittitle>Zoelen, geohydrologisch onderzoek op de nieuwe waterwinplaats,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                              <unitid identifier="63909253">1432</unitid>
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                              <unittitle>Grondwateronttrekking,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                              <unitid identifier="63909254">1530</unitid>
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                            <unittitle>Groesbeek, geohydrologisch onderzoek ten behoeve van de stichting van een waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                            <unitid identifier="63909257">1193</unitid>
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                            <unittitle>Leerinkbeek, enige hydrogeologische aspecten van het oostelijk stroomgebied.</unittitle>
                            <unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            <unittitle>Nijmegen, en omgeving.</unittitle>
                            <unitdate calendar="gregorian" normal="1931/1981" era="ce">1931-1981</unitdate>
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                            <unittitle>Amerongen, gemeente; geohydrologisch onderzoek ten behoeve van de bouw van een stuwcomplex in de Nederrijn.</unittitle>
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                            <unittitle>Montfort, geohydrologisch onderzoek ten behoeve van een door de NV Waterleidingmaatschappij voor Midden- en Noord-Limburg te stichten grondwaterwinplaats.</unittitle>
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                            <unittitle>Aetsveld, geohydrologisch onderzoek van de terreinen gelegen in de omgeving van de Aetsveldsche polder.</unittitle>
                            <unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
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                            <unittitle>Alkmaar-Den Helder, geohydrologisch onderzoek ten behoeve van een onderdoorgang van de secundaire weg nr. 7 ter plaatse van de kruising met de spoorbaan.</unittitle>
                            <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
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                                <unitid identifier="63909302">988</unitid>
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                              <unitid identifier="63909304">1028</unitid>
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                              <unittitle>Voortgezet geohydrologisch onderzoek ten behoeve van de bouwputten voor de Hem- en de Coentunnel,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                            <unitid identifier="63909327">490</unitid>
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                            <unittitle>Zeeland, ontlening van diepgrondwater aan de winplaats der Amsterdamse Duinwaterleiding in verband met de uitkomsten van het van rijkswege ingestelde onderzoek naar de geohydrologische toestand van het duingebied Schoorl en  bij Haamstede.</unittitle>
                            <unitdate calendar="gregorian" normal="1913" era="ce">1913</unitdate>
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                            <unittitle>Geohydrologisch onderzoek van de terreinen der NV Maatschappij tot Exploitatie van Onroerende Goederen Voorne's Duin.</unittitle>
                            <unitdate calendar="gregorian" normal="1934" era="ce">1934</unitdate>
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                            <unittitle>Geohydrologisch onderzoek ten behoeve van een centrale grondwaterwinplaats voor het noordoostelijk deel.</unittitle>
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                            <unittitle>Alblasserwaard, een verkennende studie op basis van pompproeven door ir. H.L.M. Rolf inzake geohydrologische mogelijkheden voor grondwaterwinning te Tienhoven en Nieuwpoort.</unittitle>
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                              <unittitle>Geohydrologische gesteldheid van de waterwinplaats,<unitdate calendar="gregorian" normal="1929" era="ce">1929</unitdate>
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                              <unittitle>Nota's inzake de resultaten van het geohydrologisch onderzoek  en de resultaten van de pompproef en de invloed van de standen van de Lek op de stijghoogte van het grondwater,<unitdate calendar="gregorian" normal="1935" era="ce">1935</unitdate>
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                              <unittitle>Nota inzake geohydrologisch en grondmechanisch onderzoek ten behoeve van een ontworpen grondwaterwinplaats te Bergambacht,<unitdate calendar="gregorian" normal="1963" era="ce">1963</unitdate>
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                            <unitid identifier="63909342">620</unitid>
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                            <unittitle>Boskoop, geohydrologische gesteldheid van de waterwinplaats van de gemeentewaterleiding.</unittitle>
                            <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
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                              <unitid identifier="63909344">675</unitid>
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                              <unittitle>Geohydrologisch onderzoek met betrekking tot het eventueel stichten van een grondwaterpompstation,<unitdate calendar="gregorian" normal="1936" era="ce">1936</unitdate>
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                              <unitid identifier="63909345">1380</unitid>
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                              <unittitle>Geohydrologische situatie ter plaatse van de geprojecteerde Drechttunnel,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                            <did>
                              <unitid identifier="63909346">1311</unitid>
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                              <unittitle>Geohydrologisch onderzoek van het zuidelijk deel van het Eiland verricht door C.R. Meinardi, J.D. Leenen en F. Rodewijk,<unitdate calendar="gregorian" normal="1980" era="ce">1980</unitdate>
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                            <unitid identifier="63909347">1352</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/466(1042)</unitid>
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                            <unittitle>Goeree en Overflakkee, nota inzake de berekeningen voor een verticaal spleetmodel ten behoeve van een geohydrologisch onderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                            <unitdate calendar="gregorian" normal="1946/1957" era="ce">1946-1957</unitdate>
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                            <did>
                              <unitid identifier="63909349">759</unitid>
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                              <unittitle>Geohydrologisch onderzoek ter plaatse en in de omgeving van de waterwinplaats,<unitdate calendar="gregorian" normal="1946" era="ce">1946</unitdate>
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                              <unitid identifier="63909350">1045</unitid>
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                              <unittitle>Nota inzake een geohydrologisch onderzoek verricht ten behoeve van de uitbreiding van de waterwinningsmiddelen,<unitdate calendar="gregorian" normal="1957" era="ce">1957</unitdate>
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                            <unittitle>Streefkerk en Bergambacht, gemeenten; nota van J.H. Steggewentz hydroloog bij het Rijksbureau voor Drinkwatervoorziening inzake de resultaten van het geohydrologische onderzoek langs de Lek.</unittitle>
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                            <unittitle>Philipsdam, geohydrologisch onderzoek naar het te verwachten waterbezwaar van de bouwput voor de bouw van een sluizencomplex.</unittitle>
                            <unitdate calendar="gregorian" normal="1978" era="ce">1978</unitdate>
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                            <unittitle>Schouwen-Duiveland, NV Waterleidingmaatschappij; nota inzake een geohydrologisch onderzoek van de waterwinplaats.</unittitle>
                            <unitdate calendar="gregorian" normal="1960" era="ce">1960</unitdate>
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                            <unittitle>Sluiskil, gemeente; onderzoeken naar de mogelijke effecten van de vuilstortplaats Koegorspolder op de kwaliteit van het grond- en oppervlaktewater.</unittitle>
                            <unitdate calendar="gregorian" normal="1979/1982" era="ce">1979-1982</unitdate>
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                            <unittitle>Terneuzen, geohydrologisch onderzoek ten behoeve van de bouw van een uitwateringssluis en een wachtsluis in het gewijzigde tracé van de oostelijke rijkswaterleiding.</unittitle>
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                              <unittitle>Vierlingsbeek, gemeente; geohydrologisch onderzoek ten behoeve van een nieuwe waterwinplaats,<unitdate calendar="gregorian" normal="1958" era="ce">1958</unitdate>
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                            <unittitle>Orthen, geohydrologisch onderzoek ten behoeve van de aanleg van een spoorwegonderdoorgang in de omlegging van Rijksweg 26.</unittitle>
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                            <unittitle>Roosendaal, Gemeentelijk Energie- en Waterleidingbedrijf; geohydrologisch onderzoek naar de mogelijkheid tot uitbreiding van de huidige grondwaterwinning door het pompstation Borteldonk.</unittitle>
                            <unitdate calendar="gregorian" normal="1977" era="ce">1977</unitdate>
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                            <unittitle>Weert, geohydrologisch onderzoek van de waterwinplaats ten behoeve van een drinkwaterleiding.</unittitle>
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                              <unitid audience="internal" type="obsolete">R09-80/221(824)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-62fe-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterwinplaats te Geulle,<unitdate calendar="gregorian" normal="1962" era="ce">1962</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63909487">1358</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/220(1049)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-62ff-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Waterwinplaats IJzeren Kuilen te Amby,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.7.02.12</unitid>
                          <unittitle>Flevoland</unittitle>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63909489">228</unitid>
                            <unitid audience="internal" type="obsolete">74-83/230</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6301-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Flevopolder, het uitvoeren van grondboringen met als doel deze in te richten tot waarnemingsputten ten behoeve van een landelijk meetnet voor de grondwaterkwaliteit.</unittitle>
                            <unitdate calendar="gregorian" normal="1982" era="ce">1982</unitdate>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63909490">2771</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6302-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>IJsselmeerpolders, wateronderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1976/1977" era="ce">1976-1977</unitdate>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>699, 760</unitid>
                            <unittitle>Noordoostpolder, rapporten inzak geohydrologisch onderzoek.</unittitle>
                            <unitdate calendar="gregorian" normal="1937/1938" era="ce">1937-1938</unitdate>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63909492">699</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/133(275)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6304-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1937" era="ce">1937</unitdate>
                              </unittitle>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63909493">760</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/133(304)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6305-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1938" era="ce">1938</unitdate>
                              </unittitle>
                            </did>
                          </c>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">171</unitid>
                    <unittitle>Het onderzoeken van de belangen die betrokken zijn bij de wateronttrekking aan de Veluwe, in verband met plannen van de gemeente Amsterdam tot het stichten van een drinkwaterleiding aldaar.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie inzake de Wateronttrekking aan de Veluwe</corpname>
                      </item>
                      <item>Bron: 'Drinkwatervoorziening in Nederland 1913-1938', p. 214.
</item>
                      <item>Product: Rapport.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2867, 2912-2913</unitid>
                      <unittitle>Veluwe-onderzoek.</unittitle>
                      <unitdate calendar="gregorian" normal="1930/1933" era="ce">1930-1933</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63910216">2912</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-658f-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1930" era="ce">1930</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910217">2913</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6590-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1931" era="ce">1931</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910218">2867</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6591-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>
                          <unitdate calendar="gregorian" normal="1932/1933" era="ce">1932-1933</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                  <c level="file">
                    <did>
                      <unitid identifier="63910219">2866</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6592-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Onderzoek Bennebroek.</unittitle>
                      <unitdate calendar="gregorian" normal="1932/1933" era="ce">1932-1933</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">172</unitid>
                    <unittitle>Het begeleiden van onderzoekingen ten dienste van technische plannen van infiltratie op de Veluwe ten behoeve van de openbare drinkwatervoorziening met het oog op harmonische inpassing van deze plannen in het geheel van de  ruimtelijke ordening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Commissie Infiltratie Veluwe</corpname>
                      </item>
                      <item>Product: 'Rapport van de Commissie Infiltratie Veluwe', nr. 1976/57 in de reeks Verslagen, adviezen, rapporten (VAR), van het Ministerie van Volksgezondheid en Milieu, Den Haag, 1977.<lb></lb>Andere rapporten, notities.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>div.nrs.</unitid>
                      <unittitle>Commissie Infiltratie Veluwe.</unittitle>
                      <unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63910228">2154</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-659a-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Instelling, opheffing en subsidiëring,<unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910229">2156</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-659b-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Correspondentie,<unitdate calendar="gregorian" normal="1972/1977" era="ce">1972-1977</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910230">2150</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(1)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-659c-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Agenda van ingekomen en uitgegane stukken,<unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2177-2179</unitid>
                        <unittitle>Vergaderstukken.<unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63910232">2177</unitid>
                          <unitid audience="internal" type="obsolete">CA2/72-77(11)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-659e-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910233">2178</unitid>
                          <unitid audience="internal" type="obsolete">CA2/72-77(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-659f-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1975" era="ce">1975</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910234">2179</unitid>
                          <unitid audience="internal" type="obsolete">CA2/72-77(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>
                            <unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                        </did>
                      </c>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910235">2163</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(6)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a1-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Vergaderstukken van de stuurgroep,<unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910236">2159</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(4)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a2-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Subgroep Recreatieve Aspecten,<unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910237">2160</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(5)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a3-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Enquête over de invloedsmatrix in het kader van het infiltratieproject Veluwe,<unitdate calendar="gregorian" normal="1973/1974" era="ce">1973-1974</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910238">2155</unitid>
                        <unitid audience="internal" type="obsolete">CA2/72-77(2)</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Voorlichting,<unitdate calendar="gregorian" normal="1973/1975" era="ce">1973-1975</unitdate>
                        </unittitle>
                      </did>
                    </c>
                    <c otherlevel="filegrp" level="otherlevel">
                      <did>
                        <unitid>2172-2175</unitid>
                        <unittitle>Eindrapport, met bijlagen.<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                        </unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63910240">2172</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910241">2173</unitid>
                          <unitid audience="internal" type="obsolete">CA2/72-77(9)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>I  - V,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910242">2174</unitid>
                          <unitid audience="internal" type="obsolete">CA2/72-77(9)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a8-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>VI - VII,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910243">2175</unitid>
                          <unitid audience="internal" type="obsolete">CA2/72-77(10)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65a9-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>VIII - XII,<unitdate calendar="gregorian" normal="1976" era="ce">1976</unitdate>
                          </unittitle>
                          <physdesc>
                            <extent>pak</extent>
                          </physdesc>
                        </did>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">180</unitid>
                    <unittitle>Het ontwerpen of herzien van (basis)plannen voor de toekomstige watervoorziening van bevolking en industrie.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksinstituut voor Drinkwatervoorziening (RID)</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Basisplannen voor watervoorzieningen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="subseries">
                    <did>
                      <unitid type="series_code">1.15</unitid>
                      <unittitle>(BASIS)PLANNEN VOOR WATERVOORZIENING</unittitle>
                    </did>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.15.01</unitid>
                        <unittitle>ALGEMEEN</unittitle>
                      </did>
                      <c level="file">
                        <did>
                          <unitid identifier="63910269">2199</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(12)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c0-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verslagen van dienstreizen die zijn gemaakt in het kader van het opstellen van basisplannen voor de toekomstige drink- en industriewatervoorziening van Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1968" era="ce">1965-1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910270">2201</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(14)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c1-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Verslagen van de werkzaamheden van ir. C. Biemond in zijn functie als raadgevend adviseur ten behoeve van het opstellen van basisplannen voor de toekomstige drink- en industriewatervoorziening van Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1971" era="ce">1965-1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910271">1259</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(916)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c2-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota inzake de Maas in verband met de basisplannen.</unittitle>
                          <unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910272">2202</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(15)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c3-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Overleg met de Vereniging van Exploitanten van Waterleidingbedrijven in Nederland (VEWIN) over het opstellen van basisplannen voor de toekomstige drink- en industriewatervoorziening van Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1966/1972" era="ce">1966-1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910273">2203</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(16)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c4-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota waarin enige beschouwingen, richtlijnen en voorstellen ten aanzien van de studie van de chemische en biologische aspecten van de inrichting en bedrijfsvoering van reservoirs, met geleidebrief.</unittitle>
                          <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910274">302</unitid>
                          <unitid audience="internal" type="obsolete">A13-73/33</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c5-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Leveren van een bijdrage aan een nota van het Ministerie van Sociale Zaken en Volksgezondheid betreffende de plaats van basisplannen voor de Drinkwatervoorziening in het geheel van de Waterhuishouding.</unittitle>
                          <unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910275">1603</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(1020)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c6-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Rapport  inzake de basisplannen voor de toekomstige drink- en industriewatervoorziening van Nederland, deel I.</unittitle>
                          <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910276">1366</unitid>
                          <unitid audience="internal" type="obsolete">R19-83/1971-027(1057)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c7-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Coördinatie van het hydrologisch onderzoek ten behoeve van de basisplannen voor de toekomstige drink- en industriewatervoorziening, nota nr. 1: Huidig en toekomstig onderzoek.</unittitle>
                          <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                        </did>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2213-2214</unitid>
                          <unittitle>De toekomstige drink- en industriewatervoorziening van Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910279">2214</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(26,27)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65c9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910280">2213</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(24,25)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ca-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Rapport,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910281">2222</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(29)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65cb-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Het regionaal geohydrologisch onderzoek ten behoeve van de basisplannen voor de toekomstige drink- en industriewatervoorziening.</unittitle>
                          <unitdate calendar="gregorian" normal="1971/1972" era="ce">1971-1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910282">2224</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(30)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65cc-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota over de financieel-economische aspecten van de basisplannen voor de toekomstige drinkwatervoorziening van Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910283">2225</unitid>
                          <unitid audience="internal" type="obsolete">C63-73(31)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65cd-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Nota van F.J. Boonstoppel over het industrieel waterverbruik.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                      <c level="file">
                        <did>
                          <unitid identifier="63910284">1408</unitid>
                          <unitid audience="internal" type="obsolete">R09-80/446(1088)</unitid>
                          <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ce-79fa-e053-09f0900a5ea8</unitid>
                          <unittitle>Toepassing van lineaire programmering bij het ontwerpen van basisplannen voor de toekomstige drink- en industriewatervoorziening in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                        </did>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.15.02</unitid>
                        <unittitle>VOORBEREIDING EN ONTWIKKELING</unittitle>
                      </did>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2191, 2194-2198</unitid>
                          <unittitle>Het opstellen van basisplannen voor de drinkwatervoorziening in Nederland.</unittitle>
                          <unitdate calendar="gregorian" normal="1963/1972" era="ce">1963-1972</unitdate>
                        </did>
                        <odd>
                          <p>Met hiaten</p>
                        </odd>
                        <c level="file">
                          <did>
                            <unitid identifier="63910290">2191</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(1-3)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65d3-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1963 aug. - 1965 sep.<unitdate calendar="gregorian" normal="1963/1965" era="ce">1963-1965</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910292">2194</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(4-7)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65d4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1965 okt. - 1967 feb.<unitdate calendar="gregorian" normal="1965/1967" era="ce">1965-1967</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910294">2195</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(8)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65d5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1967 mrt. - 1968 dec.<unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910295">2196</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(9)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65d6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1969 jan. - 1970 feb.<unitdate calendar="gregorian" normal="1969/1970" era="ce">1969-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910297">2197</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(10)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65d7-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1970 mrt. - aug.<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910298">2198</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(11)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65d8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>1970 sep. - 1972 dec.<unitdate calendar="gregorian" normal="1970/1972" era="ce">1970-1972</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Adviesgroepen.</unittitle>
                          <unitdate calendar="gregorian" normal="1965/1976" era="ce">1965-1976</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910300">2200</unitid>
                            <unitid audience="internal" type="obsolete">C63-73(13)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65da-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Chemische Werkgroep Basisplannen; De opstelling van chemische kwaliteitsnormen in verband met de waterwinning voor de drinkwatervoorziening,<unitdate calendar="gregorian" normal="1965/1970" era="ce">1965-1970</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910301">2732</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65db-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Werkgroep Waterverbruik,<unitdate calendar="gregorian" normal="1967/1973" era="ce">1967-1973</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>div.nrs.</unitid>
                            <unittitle>Commissie Constructie Spaarbekkens; Onderzoek naar de constructieve aspecten van aanleg en exploitatie van spaarbekkens.<unitdate calendar="gregorian" normal="1968/1976" era="ce">1968-1976</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910303">2204</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(17)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65dd-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Overleg,<unitdate calendar="gregorian" normal="1968/1973" era="ce">1968-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910304">2212</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(23)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65de-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De ontwikkeling van een methode voor zijdelingse afdichting van waterbekkens,<unitdate calendar="gregorian" normal="1970/1973" era="ce">1970-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910305">2770</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65df-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Totstandkoming van het rapport Constructie van spaarbekkens,<unitdate calendar="gregorian" normal="1973/1976" era="ce">1973-1976</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                        <c otherlevel="filegrp" level="otherlevel">
                          <did>
                            <unitid>2838-2839</unitid>
                            <unittitle>Werkcommissie drink- en industriewatervoorziening van de Rijksplanologische Commissie met als taak de planologische aspecten te bezien bij het opstellen van basisplannen.<unitdate calendar="gregorian" normal="1970/1973" era="ce">1970-1973</unitdate>
                            </unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910307">2838</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e1-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910308">2839</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e2-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>
                                <unitdate calendar="gregorian" normal="1972/1973" era="ce">1972-1973</unitdate>
                              </unittitle>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>2733-2735</unitid>
                          <unittitle>College van bijstand in bestuurlijke aangelegenheden.</unittitle>
                          <unitdate calendar="gregorian" normal="1966/1969" era="ce">1966-1969</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910310">2735</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e4-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Vergaderstukken,<unitdate calendar="gregorian" normal="1966/1969" era="ce">1966-1969</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910311">2733</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e5-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota inzake de basisplannen voor de toekomstige drinkwatervoorziening,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910312">2734</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e6-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nota basisplannen ten behoeve van provinciale besturen (drie versies),<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>div.nrs.</unitid>
                          <unittitle>Grondslagen basisplannen.</unittitle>
                          <unitdate calendar="gregorian" normal="1966/1969" era="ce">1966-1969</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910314">1445</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1431)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e8-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 1, afvoer- en chloridekarakteristieken van de Rijn in verband met voorraadvorming, door ir. T.G. Martijn,<unitdate calendar="gregorian" normal="1966" era="ce">1966</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910315">1276</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(935)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65e9-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 2, afvoerkarakteristieken van de Maas in verband met voorraadvorming, door ir. T.G. Martijn,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910316">1277</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(936)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ea-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 3, kwaliteitsverbetering in doorstroombekkens, door prof.ir. L. Huisman, Technische Hogeschool Delft en door ir. T.G. Martijn, Rijksinstituut voor Drinkwatervoorvoorziening, 's-Gravenhage,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910317">1278</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(917)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65eb-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 4, richtlijnen ten dienste van de voorbereiding van basisplannen voor de watervoorziening, aangaande de na te streven kwaliteit van het uit oppervlaktewater te bereiden drinkwater, rapport van de Chemische Werkgroep Basisplannen,<unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910318">1450</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(961)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ec-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 5, kwaliteitsverbetering in spaarbekkens, door ir. T.G. Martijn,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910319">1516</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(997)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ed-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 6, kwaliteitsverbetering bij kunstmatige infiltratie, door ir. T.G. Martijn en door prof.ir. L. Huisman,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910320">1409</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1089)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ee-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 7, zuiveringsmethoden van zoet grondwater voor de drinkwatervoorziening in Nederland,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </unittitle>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910321">1413</unitid>
                            <unitid audience="internal" type="obsolete">R09-80/446(1090)</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ef-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Nr. 8, de zuivering van zoet oppervlaktewater voor de drinkwatervoorziening in Nederland,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </unittitle>
                          </did>
                        </c>
                      </c>
                      <c otherlevel="filegrp" level="otherlevel">
                        <did>
                          <unitid>357-358</unitid>
                          <unittitle>Behandeling van het vraagstuk van de toekomstige organisatie van de basisplannen voor de openbare drinkwatervoorziening alsmede de organisatie van de waterleidingbedrijven.</unittitle>
                          <unitdate calendar="gregorian" normal="1967/1971" era="ce">1967-1971</unitdate>
                        </did>
                        <c level="file">
                          <did>
                            <unitid identifier="63910324">357</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/24</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65f1-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>
                              <unitdate calendar="gregorian" normal="1967/1971" era="ce">1967-1971</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                        <c level="file">
                          <did>
                            <unitid identifier="63910325">358</unitid>
                            <unitid audience="internal" type="obsolete">B1,15-72/25</unitid>
                            <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65f2-79fa-e053-09f0900a5ea8</unitid>
                            <unittitle>Bijlagen,<unitdate calendar="gregorian" normal="1968/1971" era="ce">1968-1971</unitdate>
                            </unittitle>
                            <physdesc>
                              <extent>pak</extent>
                            </physdesc>
                          </did>
                        </c>
                      </c>
                    </c>
                    <c level="subseries">
                      <did>
                        <unitid type="series_code">1.15.03</unitid>
                        <unittitle>PROVINCIES EN REGIO'S IN NEDERLAND</unittitle>
                      </did>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.15.03.1</unitid>
                          <unittitle>PROVINCIES</unittitle>
                        </did>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.1.1</unitid>
                            <unittitle>Overijssel en Gelderland</unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910329">2282</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(62)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65f6-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De opstelling van een basisplan voor de provincies Gelderland en Overijssel met betrekking tot de toekomstige drink- en industriewatervoorziening.</unittitle>
                              <unitdate calendar="gregorian" normal="1968/1970" era="ce">1968-1970</unitdate>
                            </did>
                            <odd>
                              <p>Basisplan niet aanwezig</p>
                            </odd>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910333">2283</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(63)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65f9-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De opstelling van een basisplan voor de drinkwatervoorziening door de Werkgroep Basisplan Gelderland.</unittitle>
                              <unitdate calendar="gregorian" normal="1969/1971" era="ce">1969-1971</unitdate>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910334">1342</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1030)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65fa-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Regionaal Basisplan Gelderland.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910336">2281</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(61)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65fb-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De opstelling van basisplannen voor de drink- en industriewatervoorziening door de Werkgroep Basisplannen Overijssel.</unittitle>
                              <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910337">1370</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1062)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65fc-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Basisplannen Overijssel.</unittitle>
                              <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
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                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.1.2</unitid>
                            <unittitle>Utrecht</unittitle>
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                          <c level="file">
                            <did>
                              <unitid identifier="63910339">2242</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(64)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65fe-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Werkgroep Basisplannen Utrecht.</unittitle>
                              <unitdate calendar="gregorian" normal="1969/1972" era="ce">1969-1972</unitdate>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910340">1438</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1102)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-65ff-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Regionaal Basisplan Utrecht.</unittitle>
                              <unitdate calendar="gregorian" normal="1969/1973" era="ce">1969-1973</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910341">2244</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(65)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6600-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Coördinatiegroep Geohydrologisch Onderzoek Utrecht.</unittitle>
                              <unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                            </did>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.1.3</unitid>
                            <unittitle>Noord-Holland</unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910343">2245</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(66)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6602-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Werkgroep Basisplannen Noord-Holland.</unittitle>
                              <unitdate calendar="gregorian" normal="1967/1972" era="ce">1967-1972</unitdate>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910345">2247</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(67)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6603-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. J.C. van Dam, technisch leider van de afdeling Onderzoek en Planning, betreffende de toekomstige watervoorziening van Amsterdam.</unittitle>
                              <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910347">2248</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(68)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6604-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport inzake het regionaal basisplan Noord-Holland.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.1.4</unitid>
                            <unittitle>Zuid-Holland</unittitle>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2249, 2251</unitid>
                              <unittitle>De toekomstige drinkwatervoorziening van de agglomeratie 's-Gravenhage en omgeving (Maas-duinplan).</unittitle>
                              <unitdate calendar="gregorian" normal="1966/1970" era="ce">1966-1970</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63910350">2249</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(69)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6607-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1966/1969" era="ce">1966-1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910351">2251</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(70)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6608-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910352">2253</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(71)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6609-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Werkgroep Basisplannen Zuid-Holland.</unittitle>
                              <unitdate calendar="gregorian" normal="1969/1972" era="ce">1969-1972</unitdate>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910353">2254</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(72)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-660a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. F.L. Schoufour waarin een economische vergelijking van de alternatieve oplossingen voor de toekomstige watervoorziening van Dordrecht, met bijlagen.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910354">1351</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1041)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-660b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Rapport Basisplannen Zuid-Holland.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.1.5</unitid>
                            <unittitle>Noord-Brabant</unittitle>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>div.nrs.</unitid>
                              <unittitle>Het aanleggen van spaarbekkens in de Biesbosch.</unittitle>
                              <unitdate calendar="gregorian" normal="1965/1973" era="ce">1965-1973</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63910357">2255</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(73)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-660e-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1965/1967" era="ce">1965-1967</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910358">2257</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(74)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-660f-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910359">2263</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(75)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6610-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1970/1973" era="ce">1970-1973</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2264-2265</unitid>
                              <unittitle>Werkgroep Watervoorziening Oost-Noord-Brabant.</unittitle>
                              <unitdate calendar="gregorian" normal="1968/1972" era="ce">1968-1972</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63910362">2264</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(76)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6612-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910363">2265</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(77)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6613-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1970/1972" era="ce">1970-1972</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910365">1577</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/466(1014)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6614-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deelrapport Basisplannen Oost-Noord-Brabant.</unittitle>
                              <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910366">1355</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1045)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6615-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deelrapport Basisplannen Oost-Noord-Brabant.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.1.6</unitid>
                            <unittitle>Limburg</unittitle>
                          </did>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2269-2273, 2276</unitid>
                              <unittitle>De drinkwatervoorziening in Limburg.</unittitle>
                              <unitdate calendar="gregorian" normal="1967/1972" era="ce">1967-1972</unitdate>
                            </did>
                            <odd>
                              <p>Bevat ook stukken van de Werkgroep Watervoorziening Limburg</p>
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                            <c level="file">
                              <did>
                                <unitid identifier="63910371">2269</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(78)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-661a-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910372">2270</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(79)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-661b-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910373">2271</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(80)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-661c-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910374">2272</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(81)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-661d-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910375">2273</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(82)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-661e-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1971/1972" era="ce">1971-1972</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910376">2276</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(85)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-661f-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1971/1972" era="ce">1971-1972</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910377">1360</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1051)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6620-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Economische vergelijking van de alternatieve oplossingen voor de watervoorziening van Limburg.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                        </c>
                      </c>
                      <c level="subseries">
                        <did>
                          <unitid type="series_code">1.15.03.2</unitid>
                          <unittitle>REGIO'S</unittitle>
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                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.2.4</unitid>
                            <unittitle>IJsselmeer en IJsselmeerpolders</unittitle>
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                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>1586, 2274-2275</unitid>
                              <unittitle>Werkgroep Spaarbekkens IJsselmeer.</unittitle>
                              <unitdate calendar="gregorian" normal="1968/1970" era="ce">1968-1970</unitdate>
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                            <c level="file">
                              <did>
                                <unitid identifier="63910382">2274</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(83)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6624-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910383">2275</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(84)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6625-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910384">1586</unitid>
                                <unitid audience="internal" type="obsolete">R19-83/1970-001(1019)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6626-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Interimrapport Drinkwater uit het IJsselmeer,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
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                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910385">2278</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(86)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6627-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De Regionale Werkgroep Basisplannen IJsselmeerpolders.</unittitle>
                              <unitdate calendar="gregorian" normal="1969/1971" era="ce">1969-1971</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910386">2280</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(87)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6628-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota over de tot 1980 voor de drinkwatervoorziening van de zuidelijke IJsselmeerpolders nodige nieuwe pompstations.</unittitle>
                              <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910387">1363</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1054)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6629-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Regionaal Basisplan IJsselmeerpolders.</unittitle>
                              <unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                            </did>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.2.1</unitid>
                            <unittitle>Noord-Nederland</unittitle>
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                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2229-2231, 2235-2236</unitid>
                              <unittitle>De voorbereiding van de basisplannen voor de toekomstige drink- en industriewatervoorziening door de Werkgroep Basisplannen Watervoorziening Noord.</unittitle>
                              <unitdate calendar="gregorian" normal="1967/1972" era="ce">1967-1972</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63910390">2229</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(32)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-662c-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1967/1968" era="ce">1967-1968</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910391">2230</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(33)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-662d-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>
                                  <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910392">2231</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(34)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-662e-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>1970 jan. - juli<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910393">2235</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(34)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-662f-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>1970 aug. - dec.<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910394">2236</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(35)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6630-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>1971 - 1972<unitdate calendar="gregorian" normal="1971/1972" era="ce">1971-1972</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.2.2</unitid>
                            <unittitle>Veluwe</unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910396">2232</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(36)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6632-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van R. Huisman inzake het Veluwe drinkwateronderzoek als gevolg van het toekomstig tekort aan winningsmogelijkheden in het westen van Nederland, met bijlagen.</unittitle>
                              <unitdate calendar="gregorian" normal="1967" era="ce">1967</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910397">2250</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(46)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6633-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De bouw van een proefinstallatie voor infiltratie op de Veluwe en duininfiltratie.</unittitle>
                              <unitdate calendar="gregorian" normal="1968/1970" era="ce">1968-1970</unitdate>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2233-2234, 2237-2241</unitid>
                              <unittitle>De voorbereiding en uitvoering van het infiltratieonderzoek in het Veluwegebied.</unittitle>
                              <unitdate calendar="gregorian" normal="1968/1973" era="ce">1968-1973</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63910400">2233</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(37)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6635-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>sep.,<unitdate calendar="gregorian" normal="1968" era="ce">1968</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910401">2234</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(38)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6636-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>okt - aug,<unitdate calendar="gregorian" normal="1968/1969" era="ce">1968-1969</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910403">2237</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(39)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6637-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>sep - dec,<unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910405">2238</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(40)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6638-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>jan - juni,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910406">2239</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(41)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6639-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>juli - dec,<unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910408">2240</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(42)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-663a-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>jan - okt,<unitdate calendar="gregorian" normal="1971" era="ce">1971</unitdate>
                                </unittitle>
                                <physdesc>
                                  <extent>pak</extent>
                                </physdesc>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910409">2241</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(43)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-663b-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>nov - juli,<unitdate calendar="gregorian" normal="1971/1973" era="ce">1971-1973</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910410">2243</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(44)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-663c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De uitvoering van het boorprogramma op de Veluwe in het kader van de basisplannen voor de toekomstige drink- en industriewatervoorziening.</unittitle>
                              <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910411">2246</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(45)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-663d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van drs. E. Romijn waarin een raming van de kostprijs van de infiltratiewerken op de Veluwe.</unittitle>
                              <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910412">1515</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(996)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-663e-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Resultaten van het boorprogramma van de Veluwewerkgroep, uitgevoerd in het kader van de basisplannen voor de toekomstige drink- en industriewatervoorziening.</unittitle>
                              <unitdate calendar="gregorian" normal="1969" era="ce">1969</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910413">2256</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(48)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-663f-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. G. Santing, hoofd van de Geohydrologische Afdeling, inzake de chemische samenstelling van het grondwater van de Veluwe, met bijlagen.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910414">2252</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(47)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6640-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. G. Santing, hoofd van de Geohydrologische Afdeling, inzake de mogelijkheden voor de grondwaterwinning op de Veluwe, met bijlagen.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910415">2258</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(49)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6641-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota's van ir. C. Biemond inzake de vorderingen van de studie voor infiltratiewerken op de Veluwe.</unittitle>
                              <unitdate calendar="gregorian" normal="1970/1971" era="ce">1970-1971</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910416">2266</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(55)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6642-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. M.C. Brandes inzake de opzet van een modelproef te Leiduin ten behoeve van de infiltratie op de Veluwe door middel van putten.</unittitle>
                              <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                            </did>
                          </c>
                          <c otherlevel="filegrp" level="otherlevel">
                            <did>
                              <unitid>2259-2262</unitid>
                              <unittitle>Nota's over de kunstmatige infiltratie op één of meer terreinen op de Veluwe.</unittitle>
                              <unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                            </did>
                            <c level="file">
                              <did>
                                <unitid identifier="63910418">2259</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(51)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6644-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nota 1 inzake commissies en werkgroepen en het principe van kunstmatige infiltratie, met bijlagen,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910419">2260</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(52)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6645-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nota 2 inzake het geologisch en hydrologisch vooronderzoek van de Veluwe, met bijlagen,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910420">2261</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(53)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6646-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nota 3 inzake het speurwerk met behulp van een proefinstallatie omtrent kwaliteitsproblemen bij infiltratie van voorbehandeld Rijnwater in de Veluwe, met bijlagen,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                                </unittitle>
                              </did>
                            </c>
                            <c level="file">
                              <did>
                                <unitid identifier="63910421">2262</unitid>
                                <unitid audience="internal" type="obsolete">C63-73(54)</unitid>
                                <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6647-79fa-e053-09f0900a5ea8</unitid>
                                <unittitle>Nota 4 inzake het relatiepatroon belangen Veluwe, met bijlagen,<unitdate calendar="gregorian" normal="1972" era="ce">1972</unitdate>
                                </unittitle>
                              </did>
                            </c>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910423">2267</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(56)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-6648-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Nota van ir. G. Santing, hoofd van de Geohydrologische afdeling, inzake de waterbalans van een ruimte in het noordwestelijk deel van de Veluwe, met bijlagen.</unittitle>
                            </did>
                          </c>
                        </c>
                        <c level="subseries">
                          <did>
                            <unitid type="series_code">1.15.03.2.3</unitid>
                            <unittitle>Zuid-West Nederland</unittitle>
                          </did>
                          <c level="file">
                            <did>
                              <unitid identifier="63910426">2268</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(57)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-664a-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De mogelijke aanleg van spaarbekkens in het Grevelingenbekken ten behoeve van de drinkwatervoorziening.</unittitle>
                              <unitdate calendar="gregorian" normal="1964/1973" era="ce">1964-1973</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910428">2277</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(58,59)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-664b-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De opstelling van een basisplan voor de toekomstige drinkwatervoorziening van Zuid-West Nederland.</unittitle>
                              <unitdate calendar="gregorian" normal="1966/1969" era="ce">1966-1969</unitdate>
                              <physdesc>
                                <extent>pak</extent>
                              </physdesc>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910429">2279</unitid>
                              <unitid audience="internal" type="obsolete">C63-73(60)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-664c-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>De mogelijke aanleg van het spaarbekken bij St. Philipsland.</unittitle>
                              <unitdate calendar="gregorian" normal="1967/1969" era="ce">1967-1969</unitdate>
                            </did>
                          </c>
                          <c level="file">
                            <did>
                              <unitid identifier="63910430">1606</unitid>
                              <unitid audience="internal" type="obsolete">R09-80/446(1024)</unitid>
                              <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-664d-79fa-e053-09f0900a5ea8</unitid>
                              <unittitle>Deelrapport Basisplannen Zuid-West Nederland.</unittitle>
                              <unitdate calendar="gregorian" normal="1970" era="ce">1970</unitdate>
                            </did>
                          </c>
                        </c>
                      </c>
                    </c>
                  </c>
                </c>
                <c level="subseries">
                  <did>
                    <unitid type="series_code">183</unitid>
                    <unittitle>Het verlenen van tussenkomst bij geschillen en het bevorderen van de samenwerking tussen bedrijven op het gebied van de drinkwatervoorziening.</unittitle>
                  </did>
                  <bioghist>
                    <list type="simple">
                      <item>
                        <corpname role="actor">Actor: Rijksbureau voor Drinkwatervoorziening/Rijksinstituut voor Drinkwatervoorziening</corpname>
                      </item>
                      <item>Bron: Archiefinventaris RID.
</item>
                      <item>Product: Notulen, verslagen.
</item>
                      <item>Datum: <date normal="20050425">25-04-2005</date>
                      </item>
                    </list>
                  </bioghist>
                  <c level="file">
                    <did>
                      <unitid identifier="63910595">3135</unitid>
                      <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66e2-79fa-e053-09f0900a5ea8</unitid>
                      <unittitle>Bemidddeling in het geschil tussen de gemeente Doetinchem en de N.V. Waterleidingmaatschappij Oostelijk Gelderland inzake de watervoorziening van Doetinchem.</unittitle>
                      <unitdate calendar="gregorian" normal="1955/1958" era="ce">1955-1958</unitdate>
                      <physdesc>
                        <extent>pak</extent>
                      </physdesc>
                    </did>
                  </c>
                  <c otherlevel="filegrp" level="otherlevel">
                    <did>
                      <unitid>2854-2855</unitid>
                      <unittitle>Advies inzake het geschil tussen het Gemeentelijk Waterbedrijf Groningen en de N.V. Waterleidingmaatschappij voor de provincie Groningen.</unittitle>
                      <unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                    </did>
                    <c level="file">
                      <did>
                        <unitid identifier="63910597">2854</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66e4-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Correspondentie,<unitdate calendar="gregorian" normal="1976/1978" era="ce">1976-1978</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                    <c level="file">
                      <did>
                        <unitid identifier="63910598">2855</unitid>
                        <unitid audience="internal" type="handle">http://hdl.handle.net/10648/7f02909b-66e5-79fa-e053-09f0900a5ea8</unitid>
                        <unittitle>Rapporten,<unitdate calendar="gregorian" normal="1973/1979" era="ce">1973-1979</unitdate>
                        </unittitle>
                        <physdesc>
                          <extent>pak</extent>
                        </physdesc>
                      </did>
                    </c>
                  </c>
                </c>
              </c>
            </dsc>
          </archdesc>
        </ead>