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      <marc:subfield code="a">Digital bathymetry of Great Slave Lake / </marc:subfield>
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      <marc:subfield code="a">Burlington, Ontario : </marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 8-10).</marc:subfield>
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      <marc:subfield code="a">"Assessment of climate change impacts on Canada's ecosystem is an Environment Canada priority issue. As part of the Global Energy and Water Cycle Experiment (GEWEX), this report describes the first derivation of a computer-compatible bathymetry for Great Slave Lake which is located in Canada's vulnerable northern ecosystem within the Mackenzie Basin. Dramatic changes in climate have been observed in this basin"--Management perspective.</marc:subfield>
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