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      <marc:subfield code="a">Smith, G. F. M., </marc:subfield>
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      <marc:subfield code="a">Preliminary observations and experiments on starfish with reference to the oyster / </marc:subfield>
      <marc:subfield code="c">author G.F.M. Smith.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
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      <marc:subfield code="c">Nov. 14, 1934.</marc:subfield>
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      <marc:subfield code="a">Manuscript reports of the biological stations ; </marc:subfield>
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      <marc:subfield code="a">"The destruction of young oysters by starfish is one of the most serious obstacles to oyster culture"--Scope and significance, page [1].</marc:subfield>
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      <marc:subfield code="a">Biological Board of Canada, </marc:subfield>
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      <marc:subfield code="a">Manuscript reports of the biological stations ;</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/mpo-dfo/fs52-3/Fs52-3-125-eng.pdf</marc:subfield>
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