<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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    <marc:controlfield tag="008">250121e198008##abcabd  ob   f000 0 eng d</marc:controlfield>
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      <marc:subfield code="e">rda</marc:subfield>
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      <marc:subfield code="a">Wallis, Peter Malcom, </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="4">
      <marc:subfield code="a">The assimilative capacity of the Athabasca River for organic compounds / </marc:subfield>
      <marc:subfield code="c">by P. Wallis, E. Peake, M. Strosher, B. Baker, S. Telang for Alberta Oil Sands Environmental Research Program.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Edmonton, Alberta : </marc:subfield>
      <marc:subfield code="b">Alberta Oil Sands Environmental Research Program, </marc:subfield>
      <marc:subfield code="c">August 1980.</marc:subfield>
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      <marc:subfield code="a">1 online resource (xx, 106 pages) : </marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
      <marc:subfield code="b">cr</marc:subfield>
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      <marc:subfield code="a">AOSERP 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">"Project WS 2.3.2."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 87-93).</marc:subfield>
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    <marc:datafield tag="520" ind1=" " ind2=" ">
      <marc:subfield code="a">"The assimilative capacity of the Athabasca River has been defined as the ability of the river to respond to effluent loading and still maintain its productivity and diversity. In order to estimate the assimilative capacity, it is necessary to understand the processes of degradation, the amounts and types of effluent which reach the river, and seasonal effects. In order to do this, a working conceptual model of the river must be established and built up to the point where predictions of the effects of effluent loading can be made"--Executive summary.</marc:subfield>
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      <marc:subfield code="a">Organic water pollutants</marc:subfield>
      <marc:subfield code="x">Biodegradation</marc:subfield>
      <marc:subfield code="z">Alberta</marc:subfield>
      <marc:subfield code="z">Athabasca River.</marc:subfield>
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      <marc:subfield code="a">Water quality</marc:subfield>
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      <marc:subfield code="z">Athabasca River.</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Polluants organiques de l'eau</marc:subfield>
      <marc:subfield code="x">Biodégradation</marc:subfield>
      <marc:subfield code="z">Alberta</marc:subfield>
      <marc:subfield code="z">Athabasca, Rivière.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Eau</marc:subfield>
      <marc:subfield code="x">Qualité</marc:subfield>
      <marc:subfield code="z">Alberta</marc:subfield>
      <marc:subfield code="z">Athabasca, Rivière.</marc:subfield>
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      <marc:subfield code="a">Athabasca River (Alta.)</marc:subfield>
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      <marc:subfield code="a">Athabasca, Rivière (Alb.)</marc:subfield>
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      <marc:subfield code="a">Alberta Oil Sands Environmental Research Program, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">Alberta. </marc:subfield>
      <marc:subfield code="b">Alberta Environment, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">AOSERP report ;</marc:subfield>
      <marc:subfield code="v">122.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.938755</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3453 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/eccc/en40/En40-248-122-eng.pdf</marc:subfield>
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