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      <marc:subfield code="a">Olser, John, </marc:subfield>
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      <marc:subfield code="a">A historical perspective on experimental acoustic processing systems at DRDC Atlantic / </marc:subfield>
      <marc:subfield code="c">John Olser [and three others].</marc:subfield>
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      <marc:subfield code="a">Dartmouth, Nova Scotia : </marc:subfield>
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      <marc:subfield code="c">©2017</marc:subfield>
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      <marc:subfield code="a">"Can unclassified."</marc:subfield>
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      <marc:subfield code="a">"March 2018."</marc:subfield>
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      <marc:subfield code="a">"Date of Publication from Ext Publisher: December 2017."</marc:subfield>
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      <marc:subfield code="a">Originally published in: "Canadian Acoustics, Volume number: 45, Issue number: 4, Pagination info: 18–21."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 20).</marc:subfield>
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      <marc:subfield code="a">"An enduring application of underwater acoustics has been the requirement to detect submarines. Defence Research and Development Canada – Atlantic Research Centre (DRDC Atlantic) has been leading Canadian efforts in anti-submarine warfare (ASW) and naval sonar for 75 years. Part of this research has included the development and implementation of maritime acoustic processing systems, an effort which is still being undertaken at DRDC Atlantic"--Abstract, p. 18.</marc:subfield>
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