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    <marc:datafield tag="100" ind1="1" ind2=" ">
      <marc:subfield code="a">Jeffries, Dean Stuart, </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Effects of acidic deposition on lake chemistry in southeastern Canada / </marc:subfield>
      <marc:subfield code="c">D.S. Jeffries.</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">Rivers Research Branch, National Water Research Institute, </marc:subfield>
      <marc:subfield code="c">[1991].</marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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      <marc:subfield code="a">NWRI contribution ; </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">"This paper was requested by the organizers of the Conference of the Canadian Society of Environmental Biologists (Toronto, 1991) and will be included in the conferenceProceedings. Distribution will likely be small, a few hundred copies at best. It covers the content of a presentation made by D. S. Jeffries on the effects of acid rain on the easternCanadian surface water resource"--Management perspective.</marc:subfield>
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      <marc:subfield code="a">Includes management perspective and abstract in English and French.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
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      <marc:subfield code="a">Acid deposition</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">NWRI contribution ;</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_2019/eccc/en13-5/En13-5-91-69-eng.pdf</marc:subfield>
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