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      <marc:subfield code="a">Lee, H. B.</marc:subfield>
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      <marc:subfield code="a">Analysis of 11 triazines in natural waters </marc:subfield>
      <marc:subfield code="h">[electronic resource] / </marc:subfield>
      <marc:subfield code="c">by Hing-Biu Lee and Yvonne D. Stokker.</marc:subfield>
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      <marc:subfield code="a">Analysis of eleven triazines in natural waters</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="260" ind1=" " ind2=" ">
      <marc:subfield code="a">Burlington, Ont. : </marc:subfield>
      <marc:subfield code="b">Analytical Methods Division, National Water Research Institute, Canada Centre for Inland Waters,</marc:subfield>
      <marc:subfield code="c">1985.</marc:subfield>
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      <marc:subfield code="a">19, [4] p. : </marc:subfield>
      <marc:subfield code="b">ill. </marc:subfield>
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      <marc:subfield code="a">NWRI contribution ; </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">"This paper describes a multi-residue method for the analysis of 11 common triazines at residue levels in natural water. Triazines are the most heavily used herbicides across Canada for control of broad leaf and grassy weeds in crops. This method was developed under the modular concept so that simultaneous analysis of triazines and other neutral herbicides and pesticides could later be incorporatedinto a time and cost efficient multi-class multi-residue method"--Management perspective.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
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      <marc:subfield code="a">Stokker, Yvonne D.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Environment Canada.</marc:subfield>
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      <marc:subfield code="a">National Water Research Institute (Canada)</marc:subfield>
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      <marc:subfield code="a">NWRI contribution ;</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_2017/eccc/En13-5-85-114-eng.pdf</marc:subfield>
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