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      <marc:subfield code="a">Canadian environmental sustainability indicators : </marc:subfield>
      <marc:subfield code="b">air health trends.</marc:subfield>
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      <marc:subfield code="a">Air health trends</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">December 2022.</marc:subfield>
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      <marc:subfield code="c">©2022</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Indicateurs canadiens de durabilité de l'environnement : tendances air-santé.</marc:subfield>
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      <marc:subfield code="a">"Project code: EC22011."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"Canadians are regularly exposed to air pollution from the burning of fuels for electricity, transportation, and industry. This can affect Canadians' health and lead to work absences, hospital visits and even death. The Air health trends indicators track the risk to Canadians of death or hospitalization from short-term exposures to 2 major air pollutants: ground-level ozone (O₃) and fine particulate matter (PM₂.₅). They estimate the likely risk of death or hospitalization that can be attributed to exposure to concentrations of the pollutants in the air, and present the change in that risk over time"--Page 6.</marc:subfield>
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      <marc:subfield code="a">Air</marc:subfield>
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      <marc:subfield code="a">Atmospheric ozone</marc:subfield>
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      <marc:subfield code="a">Particulate matter</marc:subfield>
      <marc:subfield code="x">Health aspects</marc:subfield>
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      <marc:subfield code="v">Statistics.</marc:subfield>
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      <marc:subfield code="a">Environmental indicators</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)9.918282</marc:subfield>
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      <marc:subfield code="t">Canadian environmental sustainability indicators </marc:subfield>
      <marc:subfield code="b">(September 2018)</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2023/eccc/en4/En4-144-85-2022-eng.pdf</marc:subfield>
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      <marc:subfield code="u">https://www.canada.ca/en/environment-climate-change/services/environmental-indicators/air-health-trends.html</marc:subfield>
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