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      <marc:subfield code="a">nl-----</marc:subfield>
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      <marc:subfield code="a">En36-522/86-1976E-PDF</marc:subfield>
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      <marc:subfield code="a">Tobin, Richard 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">Comparison of three techniques for measuring biological parameters in lake sediment / </marc:subfield>
      <marc:subfield code="c">R.S. Tobin, J.F. Ryan, D.L. Liu, B.K. Afghan.</marc:subfield>
    </marc:datafield>
    <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">December 1976.</marc:subfield>
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      <marc:subfield code="a">1 online resource (11 pages, 14 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[Unpublished report]</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">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"Three new techniques are described and applied to nine Lake Erie Shipek samples. The three techniques, radioactive thymidine incorporation into DNA, dehydrogenase reduction of resazuin and extraction and quantification of ATP measure three important, but distinctively different biochemical parameters"--Abstract.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Lake sediments</marc:subfield>
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      <marc:subfield code="x">Measurement.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Environment 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 report (Canada Centre for Inland Waters)</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">1.48 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2020/eccc/en36-522/En36-522-86-1976-eng.pdf</marc:subfield>
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