<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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      <marc:subfield code="a">Knight, Ross David, </marc:subfield>
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      <marc:subfield code="a">Geochemistry of surficial sediment cores, Greater Toronto Area, southern Ontario / </marc:subfield>
      <marc:subfield code="c">R.D. Knight, D.A.J. Stepner, R.E. Gerber, S. Holysh, and H.A.J. Russell.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Geological Survey of Canada, </marc:subfield>
      <marc:subfield code="c">2018.</marc:subfield>
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      <marc:subfield code="c">©2018</marc:subfield>
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      <marc:subfield code="a">This record only includes the Open File and accompanying graphs in PDF; the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 13-16).</marc:subfield>
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      <marc:subfield code="a">Stepner, D. A. J., </marc:subfield>
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      <marc:subfield code="a">Gerber, Richard, </marc:subfield>
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      <marc:subfield code="a">Holysh, Stephen, </marc:subfield>
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      <marc:subfield code="a">Russell, Hazen A. J., </marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada.</marc:subfield>
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