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      <marc:subfield code="a">Biological test method : </marc:subfield>
      <marc:subfield code="b">toxicity tests using aquatic life stages of frogs (Lithobates pipiens) / </marc:subfield>
      <marc:subfield code="c">Method Development and Applications Unit, Science and Technology Branch, Environment and Climate Change Canada.</marc:subfield>
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      <marc:subfield code="a">Ottawa, Ontario : </marc:subfield>
      <marc:subfield code="b">Environment and Climate Change Canada = Environnement et changement climatique Canada, </marc:subfield>
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      <marc:subfield code="c">©2024</marc:subfield>
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      <marc:subfield code="a">[Reference method] ; </marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Méthode d'essai biologique : essais de toxicité sur des grenouilles (Lithobates pipiens) selon leurs stades de développement aquatiques.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 93-110).</marc:subfield>
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      <marc:subfield code="a">Issued also in print format.</marc:subfield>
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      <marc:subfield code="a">Northern leopard frog</marc:subfield>
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      <marc:subfield code="a">Effluent quality</marc:subfield>
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      <marc:subfield code="t">Méthode d'essai biologique : </marc:subfield>
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      <marc:subfield code="t">Biological test method : </marc:subfield>
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      <marc:subfield code="a">Report. [Reference methods]</marc:subfield>
      <marc:subfield code="v">STB 1/RM/62.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.854813</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3.15 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2024/eccc/En83-10-1-62-2024-eng.pdf</marc:subfield>
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