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      <marc:subfield code="a">Moore, Stephanie, </marc:subfield>
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      <marc:subfield code="a">Hydrometric field manual : </marc:subfield>
      <marc:subfield code="b">levelling / </marc:subfield>
      <marc:subfield code="c">authors, Stephanie Moore, Otto Bédard, Gregory Langston, François Rainville, James Wilcox.</marc:subfield>
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      <marc:subfield code="a">[Gatineau, Quebec] : </marc:subfield>
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      <marc:subfield code="c">2023.</marc:subfield>
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      <marc:subfield code="c">©2023</marc:subfield>
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      <marc:subfield code="a">Issued also in French under title: Manuel pratique de levés hydrométriques : nivellement.</marc:subfield>
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      <marc:subfield code="a">"qSOP-NA005-05-2023."</marc:subfield>
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      <marc:subfield code="a">"June 2023"--Page iv.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 36).</marc:subfield>
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      <marc:subfield code="a">"The Water Survey of Canada (WSC) is the operational arm of the National Hydrological Service. It is responsible for the collection, interpretation and dissemination of standardized hydrometric data and information in Canada, as the main operator of the National Hydrometric Program for over 115 years. … This document outlines our field methods for all levelling activities, including the assessment of benchmark stability and gauge stability. This update to qSOP-NA005-04-2019 is intended to clarify and update some requirements. These procedures replace the previous levelling procedures and will be implemented by WSC moving forward, they will not be retroactively applied"--Foreword, page v.</marc:subfield>
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      <marc:subfield code="t">Hydrometric field manual : </marc:subfield>
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