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      <marc:subfield code="a">n-cnm</marc:subfield>
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      <marc:subfield code="a">En37-763/1991E-PDF</marc:subfield>
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      <marc:subfield code="a">Clair, T. A., </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">Chemical grouping of Environment Canada's lake acidification monitoring sites in Atlantic Canada / </marc:subfield>
      <marc:subfield code="c">T.A. Clair and S.R. Esterby.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Moncton, New Brunswick : </marc:subfield>
      <marc:subfield code="b">Inland Waters Directorate, Atlantic Region, Water Quality Branch, </marc:subfield>
      <marc:subfield code="c">July 1991.</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">"Tech. Rep. IWD-AR-WQB-91-168."</marc:subfield>
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      <marc:subfield code="a">Includes bibliograhical references (pages 24-25).</marc:subfield>
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      <marc:subfield code="a">Acid pollution of rivers, lakes, etc.</marc:subfield>
      <marc:subfield code="z">Atlantic Provinces.</marc:subfield>
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      <marc:subfield code="a">Lake acidification</marc:subfield>
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      <marc:subfield code="a">Pollution acide des cours d'eau, lacs, etc.</marc:subfield>
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      <marc:subfield code="a">Lacs</marc:subfield>
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      <marc:subfield code="z">Provinces de l'Atlantique.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Inland Waters Directorate. </marc:subfield>
      <marc:subfield code="b">Atlantic Region. </marc:subfield>
      <marc:subfield code="b">Water Quality Branch, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">17.80 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/eccc/en37/En37-763-1991-eng.pdf</marc:subfield>
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