<?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">McCoglan, E. C., </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 hydrocracking of residual oils and tars. </marc:subfield>
      <marc:subfield code="n">Part 6, </marc:subfield>
      <marc:subfield code="p">Catalyst de-activation by coke and metals deposition / </marc:subfield>
      <marc:subfield code="c">E.C. McCoglan and B.I. Parsons, Fuels Research Centre.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Ottawa : </marc:subfield>
      <marc:subfield code="b">Department of Energy, Mines and Resources, Mines Branch, </marc:subfield>
      <marc:subfield code="c">1974.</marc:subfield>
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      <marc:subfield code="a">1 online resource (iii, 21 pages) : </marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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      <marc:subfield code="a">Research report ; </marc:subfield>
      <marc:subfield code="v">R 273</marc:subfield>
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      <marc:subfield code="a">Cover title.</marc:subfield>
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      <marc:subfield code="a">"May 1974."</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Natural Resources Canada].</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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    <marc:datafield tag="520" ind1="3" ind2=" ">
      <marc:subfield code="a">"The following report is the sixth in a series on the hydrocracking of residual oils and tars and is concerned with the problem of coke formation and the deposition of metals and minerals on catalysts for the catalytic hydrocracking of Athabasca bitumen"--Introduction, page 1.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="546" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes abstract in French.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
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      <marc:subfield code="a">Parsons, B. I., </marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Department of Energy, Mines and Resources.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">Fuels Research Centre (Canada)</marc:subfield>
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      <marc:subfield code="a">Research report (Canada. Mines Branch)</marc:subfield>
      <marc:subfield code="v">R 273.</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3.35 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-273-1974-eng.pdf</marc:subfield>
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