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      <marc:subfield code="a">Thomson, R. B., </marc:subfield>
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      <marc:subfield code="c">prepared by R.B. Thomson.</marc:subfield>
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      <marc:subfield code="c">November 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">Includes bibliographical references (page 14).</marc:subfield>
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      <marc:subfield code="a">"This paper was prepared to address the benefits and detractions of "integrated monitoring" with a focus on air as the major medium. The area of interest is the transboundary region of British Columbia and the States of Washington, Idaho and Montana. With this goal in mind, the air pollution situation and the relevant meteorology of the transboundary region of British Columbia is reviewed"--Executive Summary, page i.</marc:subfield>
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