<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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      <marc:subfield code="b">eng</marc:subfield>
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      <marc:subfield code="a">En36-533/8401E-PDF</marc:subfield>
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      <marc:subfield code="a">Chau, Y. K., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Occurrence of methyltin and butyltin species in environmental samples in Ontario / </marc:subfield>
      <marc:subfield code="c">Y.K. Chau, R.J. Maguire, P.T.S. Wong, B.A. Glen, G.A. Bengert and R.J. Tkacz.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Burlington, Ontario : </marc:subfield>
      <marc:subfield code="b">Environmental Contaminants Division, National Water Research Institute, Department of the Environment, Canada Centre for Inland Waters, </marc:subfield>
      <marc:subfield code="c">January 1984.</marc:subfield>
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      <marc:subfield code="a">1 online resource (9 pages, 18 unnumbered pages).</marc:subfield>
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      <marc:subfield code="a">text</marc:subfield>
      <marc:subfield code="b">txt</marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
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      <marc:subfield code="2">rdamedia</marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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    <marc:datafield tag="490" ind1="0" ind2=" ">
      <marc:subfield code="a">Report ; </marc:subfield>
      <marc:subfield code="v">no. 8401</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"During fiscal years 1982-1983 and 1983-1984 the Great Lakes Water Quality Program provided funding for a survey to determine the extent of contamination of waters on the Canadian side of the Great Lakes basin by methyltin and butyltin compounds. This is the report of the results of analyses of water, sediment and fish from about one hundred locations, largely in Ontario. Butyltin species were widely found in water and sediment samples. The highest concentrations were in harbours, reflecting the use of tri—n—butyltin as an antifouling agent in boat paint. Methyltin species were infrequently detected, and their occurrence was correlated with the presence of relatively high concentrations of inorganic tin"--Abstract.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Organotin compounds</marc:subfield>
      <marc:subfield code="x">Environmental aspects</marc:subfield>
      <marc:subfield code="z">Ontario.</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">Ontario.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Water quality</marc:subfield>
      <marc:subfield code="z">Ontario.</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Composés organostanniques</marc:subfield>
      <marc:subfield code="x">Aspect de l'environnement</marc:subfield>
      <marc:subfield code="z">Ontario.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Eau</marc:subfield>
      <marc:subfield code="x">Pollution</marc:subfield>
      <marc:subfield code="z">Ontario.</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">Ontario.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="710" ind1="1" ind2=" ">
      <marc:subfield code="a">National Water Research Institute (Canada). </marc:subfield>
      <marc:subfield code="b">Environmental Contaminants Division, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Canada Centre for Inland Waters, </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">1.71 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2020/eccc/En36-533-8401-eng.pdf</marc:subfield>
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