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      <marc:subfield code="a">Stepner, D. A. J., </marc:subfield>
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      <marc:subfield code="a">Geochemistry of surficial sediment cores, southern Ontario : </marc:subfield>
      <marc:subfield code="b">data release / </marc:subfield>
      <marc:subfield code="c">D.A.J. Stepner [and four others].</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
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      <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 publication's PDF files; 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 7-10).</marc:subfield>
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      <marc:subfield code="a">"The objective of this Open File is to release geochemical data and associated QA-QC data for 1176 surficial sediment samples from 22 continuously cored boreholes from eight geographic areas located in southern Ontario (Fig. 1). These analysis were carried out to provide: 1) an improved understanding of the basin geochemistry as currently available using portable X-ray fluorescence spectrometry (pXRF) data and; 2) to provide a control group for verifying and validating data collected by pXRF"--page 1.</marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada.</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m183-2/M183-2-8467-eng.pdf</marc:subfield>
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