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      <marc:subfield code="a">Compendium of Canada's engagement in international environmental agreements and instruments. </marc:subfield>
      <marc:subfield code="p">Vienna Convention for the Protection of the Ozone Layer.</marc:subfield>
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      <marc:subfield code="a">[Gatineau, Quebec] : </marc:subfield>
      <marc:subfield code="b">Environment and Climate Change Canada = Environnement et changement climatique Canada, </marc:subfield>
      <marc:subfield code="c">2018.</marc:subfield>
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      <marc:subfield code="c">©2018</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Recueil des engagements du Canada aux accords internationaux sur l'environnement. Convention de Vienne pour la protection de la couche d’ozone.</marc:subfield>
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      <marc:subfield code="a">Caption title.</marc:subfield>
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      <marc:subfield code="a">"Compendium edition: October 2018."</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">Includes bibliographical hyperlink references.</marc:subfield>
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      <marc:subfield code="a">"The Vienna Convention is the first international agreement dedicated to the protection of the ozone layer. The Convention commits all countries to take measures to protect human health and the environment resulting from modifications to the ozone layer"--Plain language summary.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="t">Recueil des engagements du Canada aux accords internationaux sur l'environnement. </marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.880731</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/eccc/en4-381/En4-381-1-47-2018-eng.pdf</marc:subfield>
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