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      <marc:subfield code="a">Warburton, F. E., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Outline of boring sponge investigations in Malpeque Bay, P.E.I., 1952-1956 / </marc:subfield>
      <marc:subfield code="c">authorship, F. E. Warburton ; revised and edited by J. C. Medcof.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">St. Andrews, N.B. : </marc:subfield>
      <marc:subfield code="b">Fisheries Research Board of Canada, Biological Station, </marc:subfield>
      <marc:subfield code="c">August 1958.</marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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      <marc:subfield code="a">Manuscript report series (biological) ; </marc:subfield>
      <marc:subfield code="v">no. 655</marc:subfield>
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      <marc:subfield code="a">Cover title.</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Department of Fisheries and Oceans].</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">"In May, 1952, the writer was appointed as a Junior Research Assistant (seasonal) by the Fisheries Research Board to investigate the biology of boring sponges, and to seek an economically feasible method for their control. Since damage was most severely felt in Malpeque Bay, P.E.I., where oyster culture is more intensively practised than elsewhere in the Maritimes, he was stationed at the Biological Sub-Station, on the Bideford River near Ellerslie, P.E.I."--Introduction, page [1].</marc:subfield>
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      <marc:subfield code="a">Boring sponges</marc:subfield>
      <marc:subfield code="x">Biological control</marc:subfield>
      <marc:subfield code="z">Prince Edward Island.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Boring sponges</marc:subfield>
      <marc:subfield code="x">Economic aspects</marc:subfield>
      <marc:subfield code="z">Prince Edward Island.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Oyster culture</marc:subfield>
      <marc:subfield code="x">Economic aspects</marc:subfield>
      <marc:subfield code="z">Prince Edward Island.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Éponge clione</marc:subfield>
      <marc:subfield code="x">Lutte biologique contre</marc:subfield>
      <marc:subfield code="z">Île-du-Prince-Édouard.</marc:subfield>
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      <marc:subfield code="a">Éponge clione</marc:subfield>
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      <marc:subfield code="z">Île-du-Prince-Édouard.</marc:subfield>
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      <marc:subfield code="a">Ostréiculture</marc:subfield>
      <marc:subfield code="x">Aspect économique</marc:subfield>
      <marc:subfield code="z">Île-du-Prince-Édouard.</marc:subfield>
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      <marc:subfield code="a">Fisheries Research Board of Canada. </marc:subfield>
      <marc:subfield code="b">Biological Station (St. Andrews, N.B.), </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">Manuscript report series (biological)</marc:subfield>
      <marc:subfield code="v">no. 655.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.812823</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3.95 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs52-2/Fs52-2-655-eng.pdf</marc:subfield>
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