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      <marc:subfield code="a">Hughes, Charles J. A., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">The effect of various intensities of light as a factor in determining the vertical distribution of diaptomus minutus / </marc:subfield>
      <marc:subfield code="c">author Charles J.A. Hughes.</marc:subfield>
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      <marc:subfield code="a">Report on various intensities of light as a factor in determining the vertical distribution of diaptomus minutus</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Biological Board of Canada, </marc:subfield>
      <marc:subfield code="c">[1930?]</marc:subfield>
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      <marc:subfield code="a">Manuscript reports of the biological stations ; </marc:subfield>
      <marc:subfield code="v">no. 24</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">"The following is a short report on the vertical distribution of Diaptomus Minutus as found in Gibson Lake, Charlotte County, New Brunswick. The collections of plankton were made at Station 2, so-called, during the four weeks of August 1930. About 90 samples form the basis for this report. The object of the experiment was to determine the effect of various intensities of light as a factor governing the vertical distribution of this special form of plankton"--Page [1].</marc:subfield>
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      <marc:subfield code="a">Diaptomus</marc:subfield>
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      <marc:subfield code="z">New Brunswick.</marc:subfield>
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      <marc:subfield code="a">Plankton</marc:subfield>
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      <marc:subfield code="z">New Brunswick.</marc:subfield>
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      <marc:subfield code="a">Plankton</marc:subfield>
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      <marc:subfield code="z">New Brunswick.</marc:subfield>
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      <marc:subfield code="a">Diaptomus</marc:subfield>
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      <marc:subfield code="z">Nouveau-Brunswick.</marc:subfield>
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      <marc:subfield code="a">Plancton</marc:subfield>
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      <marc:subfield code="z">Nouveau-Brunswick.</marc:subfield>
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      <marc:subfield code="a">Plancton</marc:subfield>
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      <marc:subfield code="z">Nouveau-Brunswick.</marc:subfield>
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      <marc:subfield code="a">Biological Board of Canada, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">Manuscript reports of the biological stations ;</marc:subfield>
      <marc:subfield code="v">no. 24.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.899091</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_2025/mpo-dfo/fs52-3/Fs52-3-24-eng.pdf</marc:subfield>
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