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      <marc:subfield code="a">Keizer, Paul D., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">The effectiveness and toxicity of the oil dispersant, Oilsperse 43, in large outdoor tanks / </marc:subfield>
      <marc:subfield code="c">P.D. Keizer and P.G. Wells.</marc:subfield>
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      <marc:subfield code="a">Halifax, Nova Scotia : </marc:subfield>
      <marc:subfield code="b">Environment Canada, Environmental Protection Service = Environnement Canada, Service de la protection de l'environnement, </marc:subfield>
      <marc:subfield code="c">April, 1975.</marc:subfield>
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      <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">"Environmental Protection Service Report Series."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"Use of the dispersant, Oilsperse 43, increased the dispersion of Venezuelan Guanipa crude oil. The resulting mixture was more homogeneous and the oil slick less viscous than in the oil tank. The dispersant appeared to retard formation of the familiar "crust" on the surface"--Abstract.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/eccc/En46-5-75-8-eng.pdf</marc:subfield>
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