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      <marc:subfield code="a">Dobson, H. F. H. </marc:subfield>
      <marc:subfield code="q">(Hugh F. H.)</marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">Lake Ontario water chemistry atlas / </marc:subfield>
      <marc:subfield code="c">H.F.H. Dobson.</marc:subfield>
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      <marc:subfield code="a">Burlington, Ontario : </marc:subfield>
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      <marc:subfield code="c">©1985.</marc:subfield>
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      <marc:subfield code="a">Scientific series ; </marc:subfield>
      <marc:subfield code="v">no. 139</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">Issued also in French under title: Atlas de chimie de l'eau du lac Ontario.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 11-12).</marc:subfield>
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      <marc:subfield code="a">"Lake Ontario is located at the downstream end of the Great Lakes chain and receives the waters of Lake Erie as well as the runoff from its own basin. The increasing population (Fig. 1) uses Lake Ontario water for drinking water supply, industry, fishing and recreation"--Introduction, page 1.</marc:subfield>
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      <marc:subfield code="a">Eutrophication</marc:subfield>
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      <marc:subfield code="t">Atlas de chimie de l'eau du lac Ontario </marc:subfield>
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      <marc:subfield code="a">Scientific series (Canada. Inland Waters Directorate)</marc:subfield>
      <marc:subfield code="v">no. 139.</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/eccc/En36-502-139-eng.pdf</marc:subfield>
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