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      <marc:subfield code="a">En36-522/150-1979E-PDF</marc:subfield>
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      <marc:subfield code="a">Ford, J. S., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Environmental measuring systems recently prototyped by staff of the Engineering Services Section, National Water Research Institute, for limnological and other water research studies : </marc:subfield>
      <marc:subfield code="b">ES - 515 / </marc:subfield>
      <marc:subfield code="c">J.S. Ford, Head.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">[Burlington, Ont.] : </marc:subfield>
      <marc:subfield code="b">Canada Centre for Inland Waters, </marc:subfield>
      <marc:subfield code="c">January 1979.</marc:subfield>
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      <marc:subfield code="a">1 online resource (iv, 61 pages) : </marc:subfield>
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      <marc:subfield code="a">Cover title.</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
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      <marc:subfield code="a">"The Engineering Services Section of the Scientific Support Division serves all divisions and agencies at the Canada Centre for Inland Waters as well as detachments of Inland Waters Directorate in various regions of Canada. These services include the design, development, consultation, evaluation, specification, calibration and maintenance of a wide variety of systems used to sample or measure environmental variables and to process, record and display the variables"--Introduction, page ii.</marc:subfield>
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      <marc:subfield code="a">Canada Centre for Inland Waters.</marc:subfield>
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      <marc:subfield code="a">Centre canadien des eaux intérieures.</marc:subfield>
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      <marc:subfield code="a">Environmental monitoring</marc:subfield>
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      <marc:subfield code="a">Limnology</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Hydrological instruments</marc:subfield>
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      <marc:subfield code="a">Environnement</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Limnologie</marc:subfield>
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      <marc:subfield code="x">Appareils et matériel.</marc:subfield>
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      <marc:subfield code="a">Hydrologie</marc:subfield>
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      <marc:subfield code="z">Canada.</marc:subfield>
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      <marc:subfield code="a">Canada Centre for Inland Waters, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">Unpublished report (Canada Centre for Inland Waters)</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2024/eccc/en36/En36-522-150-1979-eng.pdf</marc:subfield>
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