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      <marc:subfield code="a">En39-148/1989E-PDF</marc:subfield>
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      <marc:subfield code="a">Ozga, W. J., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">1988-89 summary report for review of hydrometric survey data to 1986 : </marc:subfield>
      <marc:subfield code="b">for selected gauging stations in the Northwest Territories / </marc:subfield>
      <marc:subfield code="c">prepared by: W.J. Ozga, P. Eng.</marc:subfield>
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      <marc:subfield code="a">Yellowknife, NWT : </marc:subfield>
      <marc:subfield code="b">Inland Waters and Lands, Western and Northern Region, </marc:subfield>
      <marc:subfield code="c">March 1989.</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">"The purpose of this contract was to carry out an in-depth review of historical hydrometric survey data for selected gauging stations in the Northwest Territories in order to find and correct significant errors in the original computations; and to make recommendations for improving future data collection and computation methods to ensure that national standards are maintained"--Introduction, page 3.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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