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      <marc:subfield code="a">Richardson, Nigel H., </marc:subfield>
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      <marc:subfield code="a">Economic benefits of a clean environment : </marc:subfield>
      <marc:subfield code="b">Sudbury case study / </marc:subfield>
      <marc:subfield code="c">Nigel H. Richardson, Beth I. Savan, Laszlo Bodnar.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
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      <marc:subfield code="c">October 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.</marc:subfield>
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      <marc:subfield code="a">Environmental policy</marc:subfield>
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      <marc:subfield code="a">Environmental protection </marc:subfield>
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      <marc:subfield code="a">Environnement</marc:subfield>
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      <marc:subfield code="a">Environnement</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3.45 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2024/eccc/en4/En4-666-1989-eng.pdf</marc:subfield>
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