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      <marc:subfield code="a">En36-518/91-02E-PDF</marc:subfield>
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      <marc:subfield code="a">Mayer, T., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">Rapid procedures for determining bioavailable and total phosphorus in freshwater sediments / </marc:subfield>
      <marc:subfield code="c">by T. Mayer.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Burlington, Ontario : </marc:subfield>
      <marc:subfield code="b">Rivers Research Branch, National Water Research Institute, Canada Centre for Inland Waters, </marc:subfield>
      <marc:subfield code="c">January 1991.</marc:subfield>
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      <marc:subfield code="a">1 online resource (13 pages).</marc:subfield>
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      <marc:subfield code="a">Technical report ; </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">Includes bibliographical references (pages 9-11).</marc:subfield>
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      <marc:subfield code="a">"In the past two decades numerous studies have been concerned with the issue of biological availability of phosphorus (P) from the solid substrate. Studies included a wide range of samples such as benthic sediments, suspended sediments, urban and agricultural runoff, and particulates from industrial and waste water effluents"--Introduction, page 3.</marc:subfield>
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      <marc:subfield code="a">Phosphorus</marc:subfield>
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      <marc:subfield code="a">National Water Research Institute (Canada). </marc:subfield>
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      <marc:subfield code="a">Canada Centre for Inland Waters.</marc:subfield>
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      <marc:subfield code="a">Technical note (National Water Research Institute (Canada))</marc:subfield>
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      <marc:subfield code="w">(CaOODSP)9.862532</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/eccc/En36-518-91-02-eng.pdf</marc:subfield>
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