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      <marc:subfield code="a">Limnological trends in Wood Lake, B.C. (1971-1981) with some implications for lake management / </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 17-18).</marc:subfield>
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