<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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    <marc:controlfield tag="003">CaOODSP</marc:controlfield>
    <marc:controlfield tag="005">20260212112618</marc:controlfield>
    <marc:controlfield tag="006">m     o  d f      </marc:controlfield>
    <marc:controlfield tag="007">cr mn|||||||||</marc:controlfield>
    <marc:controlfield tag="008">260212s1939    onc     o    f000 0 eng d</marc:controlfield>
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      <marc:subfield code="a">CaOODSP</marc:subfield>
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      <marc:subfield code="e">rda</marc:subfield>
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      <marc:subfield code="a">Fs52-3/318E-PDF</marc:subfield>
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      <marc:subfield code="a">Clemens, W. A., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Production in bodies of water / </marc:subfield>
      <marc:subfield code="c">author W.A. Clemens.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Fisheries Research Board of Canada, </marc:subfield>
      <marc:subfield code="c">[1939]</marc:subfield>
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      <marc:subfield code="a">Manuscript reports of the biological stations ; </marc:subfield>
      <marc:subfield code="v">no. 318</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Digitized edition from print [produced by Department of Fisheries and Oceans].</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="520" ind1=" " ind2=" ">
      <marc:subfield code="a">"The subject of production is of particular interest to fishery biologists and it has seemed advisable to define certain terms and to outline some of the factors affecting production. While the material presented applies to all bodies of water, reference is made only to lakes as a matter of convenience"--Page [1].</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Freshwater productivity.</marc:subfield>
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      <marc:subfield code="a">Bodies of water.</marc:subfield>
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      <marc:subfield code="a">Aquatic ecology.</marc:subfield>
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      <marc:subfield code="a">Eau douce</marc:subfield>
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      <marc:subfield code="a">Eaux.</marc:subfield>
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      <marc:subfield code="a">Écologie des eaux.</marc:subfield>
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      <marc:subfield code="a">Fisheries Research Board of Canada, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">Manuscript reports of the biological stations ;</marc:subfield>
      <marc:subfield code="v">no. 318.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.899091</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">1.18 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs52-3/Fs52-3-318-eng.pdf</marc:subfield>
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