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      <marc:subfield code="a">R71-49/4-3E-PDF</marc:subfield>
      <marc:subfield code="z">R71-49/4-3E</marc:subfield>
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      <marc:subfield code="a">Carey, John H., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">Distribution of contaminants in the water, sediment and biota in the Peace, Athabasca and Slave River Basins : </marc:subfield>
      <marc:subfield code="b">present levels and predicted future trends / </marc:subfield>
      <marc:subfield code="c">by J.H. Carey, O.T.R. Cordeiro, B.G. Brownlee.</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">Northern River Basins Study, </marc:subfield>
      <marc:subfield code="c">1997.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="4">
      <marc:subfield code="c">©1997</marc:subfield>
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      <marc:subfield code="a">1 online resource (x, 92 pages, 1 unnumbered page) : </marc:subfield>
      <marc:subfield code="b">charts, maps.</marc:subfield>
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      <marc:subfield code="a">text</marc:subfield>
      <marc:subfield code="b">txt</marc:subfield>
      <marc:subfield code="2">rdacontent</marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
      <marc:subfield code="b">c</marc:subfield>
      <marc:subfield code="2">rdamedia</marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
      <marc:subfield code="b">cr</marc:subfield>
      <marc:subfield code="2">rdacarrier</marc:subfield>
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    <marc:datafield tag="490" ind1="1" ind2=" ">
      <marc:subfield code="a">Northern River Basins Study synthesis report ; </marc:subfield>
      <marc:subfield code="v">no. 3</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <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">"November, 1997."</marc:subfield>
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    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references (pages 87-92).</marc:subfield>
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      <marc:subfield code="a">"Several approaches were employed by NRBS to characterize the organochlorines and other contaminants entering the NRBS river systems from municipal, industrial (pulp mill and nonpulp mill) sources and from long-range atmospheric transport. These included literature reviews, compilations of information available in historical governmental records on municipal and industrial discharges of liquid effluent to the NRBS area (SENTAR 1996 and McCubbin et al.1996), field studies in the Hinton to Whitecourt reach of the Athabasca River in 1992 and 1993 (Crosley 1996a,c), and broad spectrum analyses for non-routine contaminants in industrial and municipal effluent samples (Johnson et al. 1996). Additional information from the scientific literature was used to characterize the long-range atmospheric transport of contaminants and to develop source-specific contaminant profiles. The location, treatment technology and waste disposal methods of all licenced municipal and non-pulp mill effluent dischargers in the Peace, Athabasca and Slave River basins were summarized for the NRBS by SENTAR (1996)"--Summary.</marc:subfield>
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      <marc:subfield code="a">Water</marc:subfield>
      <marc:subfield code="x">Pollution</marc:subfield>
      <marc:subfield code="z">Alberta</marc:subfield>
      <marc:subfield code="z">Athabasca River Watershed.</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Water</marc:subfield>
      <marc:subfield code="x">Pollution</marc:subfield>
      <marc:subfield code="z">Peace River Watershed (B.C. and Alta.)</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Water</marc:subfield>
      <marc:subfield code="x">Pollution</marc:subfield>
      <marc:subfield code="z">Slave River Watershed (Alta. and N.W.T.)</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Eau</marc:subfield>
      <marc:subfield code="x">Pollution</marc:subfield>
      <marc:subfield code="z">Alberta</marc:subfield>
      <marc:subfield code="z">Athabasca, Bassin de l'.</marc:subfield>
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      <marc:subfield code="a">Eau</marc:subfield>
      <marc:subfield code="x">Pollution</marc:subfield>
      <marc:subfield code="z">Paix, Bassin de la rivière de la (C.-B. et Alb.)</marc:subfield>
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      <marc:subfield code="a">Eau</marc:subfield>
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      <marc:subfield code="z">Esclaves, Rivière des (Alb. et T.N.-O.)</marc:subfield>
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      <marc:subfield code="a">Northern River Basins Study (Canada)‏, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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    <marc:datafield tag="830" ind1="#" ind2="0">
      <marc:subfield code="a">Northern River Basins Study synthesis report ;</marc:subfield>
      <marc:subfield code="v">no. 3.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.883432</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">4107 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2024/eccc/R71-49-4-3-eng.pdf</marc:subfield>
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