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      <marc:subfield code="a">En36-539/84-1974E-PDF</marc:subfield>
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      <marc:subfield code="a">Chan, C. H., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="2">
      <marc:subfield code="a">A description of the temperature, nutrient major ion and trace metal conditions in Lake Superior 1968-1971 / </marc:subfield>
      <marc:subfield code="c">by C.H. Chan.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Burlington, Ontario : </marc:subfield>
      <marc:subfield code="b">Canada Centre for Inland Waters, </marc:subfield>
      <marc:subfield code="c">March 1974.</marc:subfield>
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      <marc:subfield code="a">1 online resource (v, 30 pages, 49 unnumbered pages) : </marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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      <marc:subfield code="a">[Unpublished manuscript]</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">"Locator No: WQMS74-002, Contribution No. 74-002"--Cover.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 29-30).</marc:subfield>
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      <marc:subfield code="a">"The chemical limnology of Lake Superior is the least studied and the least understood among the Great Lakes. Much of the current studies have been directed toward the lower lakes where excessive-eutrophication has caused progressive deterioration of water quality and undesirable changes of species in the biotic communities"--Introduction.</marc:subfield>
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      <marc:subfield code="a">Limnology</marc:subfield>
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      <marc:subfield code="a">Limnologie</marc:subfield>
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      <marc:subfield code="a">National Water Research Institute (Canada), </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">Unpublished manuscript (National Water Research Institute (Canada))</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_2021/eccc/en36-539/En36-539-84-1974-eng.pdf</marc:subfield>
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