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      <marc:subfield code="a">Emslie, J. H, </marc:subfield>
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      <marc:subfield code="a">The analysis of National Air Pollution Program 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">"16 Apr. 64."</marc:subfield>
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      <marc:subfield code="a">"CIR 4021."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 8).</marc:subfield>
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      <marc:subfield code="a">"The role of the Meteorological Branch in the National Air Pollution Programme is examined, and explained. The methods of documentation, machine tabulation, correlation with meteorological parameters and analysis of the data are described"--Abstract.</marc:subfield>
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