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      <marc:subfield code="a">Canadian environmental sustainability indicators : </marc:subfield>
      <marc:subfield code="b">air pollutant emissions.</marc:subfield>
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      <marc:subfield code="a">Air pollutant emissions</marc:subfield>
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      <marc:subfield code="a">Gatineau QC : </marc:subfield>
      <marc:subfield code="b">Environment and Climate Change Canada = Environnement et changement climatique Canada, </marc:subfield>
      <marc:subfield code="c">July 2021.</marc:subfield>
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      <marc:subfield code="c">©2021</marc:subfield>
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      <marc:subfield code="a">1 online resource (80 pages) : </marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Indicateurs canadiens de durabilité de l'environnement : émissions de polluants atmosphériques.</marc:subfield>
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      <marc:subfield code="a">Issued also in HTML format.</marc:subfield>
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      <marc:subfield code="a">"Project code: 21032.104."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"Air pollution problems, such as smog and acid rain, result from the release of pollutants into the atmosphere. The majority of these pollutants are released through human activities, such as transportation, the burning of fuels for electricity and heating, and a variety of industrial activities. The indicators on sulphur oxides (SOx), nitrogen oxides (NOx), volatile organic compounds (VOCs), carbon monoxide (CO), ammonia (NH3) fine particulate matter (PM2.5) and black carbon, a component of PM2.5, report emissions released through human activities"--Page 8 of 80.</marc:subfield>
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      <marc:subfield code="a">Air</marc:subfield>
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      <marc:subfield code="a">Environmental indicators</marc:subfield>
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      <marc:subfield code="a">Statistics</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Environment and Climate Change Canada, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="t">Indicateurs canadiens de durabilité de l'environnement : </marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.901792</marc:subfield>
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      <marc:subfield code="t">Canadian environmental sustainability indicators : </marc:subfield>
      <marc:subfield code="b">(June 2022)</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.912003</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="795" ind1=" " ind2=" ">
      <marc:subfield code="t">Canadian environmental sustainability indicators : </marc:subfield>
      <marc:subfield code="b">(November 2020)</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.890340</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3.06 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2021/eccc/en4-144/En4-144-22-2021-eng.pdf</marc:subfield>
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      <marc:subfield code="q">HTML</marc:subfield>
      <marc:subfield code="s">N/A</marc:subfield>
      <marc:subfield code="u">https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/air-pollutant-emissions.html</marc:subfield>
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