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      <marc:subfield code="a">Wilson, H. P., </marc:subfield>
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      <marc:subfield code="a">1951 aviation weather summaries for selected Canadian Arctic stations / </marc:subfield>
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      <marc:subfield code="c">21 Apr 52.</marc:subfield>
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      <marc:subfield code="a">"In a previous paper (1) the authors gave figures for ceiling and visibility averages for the joint Canadian-United States Arctic stations. The present one is a summary of 1951 conditions for those same terminals and also for a few other weather stations in the same general area"--Introduction.</marc:subfield>
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