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      <marc:subfield code="a">Potter, J. G., </marc:subfield>
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      <marc:subfield code="a">The elimination of directional bias in wind data / </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">"Ratner's method of eliminating the directional bias has been found to give reliable results. Since it is fairly simple, both in the test for the existence of the bias and its elimination, it has been summarized and its application to Canadian wind direction data illustrated"--Page [1].</marc:subfield>
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