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      <marc:subfield code="a">Nutrients in the St. Lawrence River : </marc:subfield>
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      <marc:subfield code="a">Canadian environmental sustainability indicators : </marc:subfield>
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      <marc:subfield code="a">[October 2026 edition].</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>
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      <marc:subfield code="c">©2026</marc:subfield>
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      <marc:subfield code="a">Incorrect ISBN (7980662493181) printed in this publication.</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Éléments nutritifs dans le fleuve Saint-Laurent : indicateurs canadiens de durabilité de l'environnement.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 14-15).</marc:subfield>
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      <marc:subfield code="a">"This indicator presents, for each of the sampling stations in the St. Lawrence River and its major tributaries, the percentage of phosphorus and nitrogen samples that are above the nutrient guidelines for the 2023 to 2025 period. It also provides the concentrations of phosphorus and nitrogen over time from 2010 to 2025"--Page 5.</marc:subfield>
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      <marc:subfield code="a">Water</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>
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      <marc:subfield code="t">Éléments nutritifs dans le fleuve Saint-Laurent : </marc:subfield>
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      <marc:subfield code="t">Canadian environmental sustainability indicators : </marc:subfield>
      <marc:subfield code="b">[June 2024 edition]</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.938417</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
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