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      <marc:subfield code="a">DCIEM diving manual : </marc:subfield>
      <marc:subfield code="b">part 2 : helium-oxygen surface-supplied decompression procedures and tables.</marc:subfield>
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      <marc:subfield code="c">October 1992.</marc:subfield>
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      <marc:subfield code="c">©1992</marc:subfield>
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      <marc:subfield code="a">DCIEM ; </marc:subfield>
      <marc:subfield code="v">no. 92-50</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Defence R&amp;D Canada].</marc:subfield>
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      <marc:subfield code="a">"The DCIEM Helium/Oxygen, 84/16 Decompression Tables provides a methodology to negate nitrogen-induced narcosis, provides deep diving operations with significant flexibility and allows for the substantial extension of depth/bottom time limits outside that of the existing DCIEM Air Tables"--Section 1, introduction, background, page 2-2.</marc:subfield>
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      <marc:subfield code="a">Deep diving</marc:subfield>
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      <marc:subfield code="a">Underwater breathing apparatus</marc:subfield>
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      <marc:subfield code="a">Plongée sous-marine</marc:subfield>
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      <marc:subfield code="a">Universal Dive Techtronics, Inc. (UDT), </marc:subfield>
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      <marc:subfield code="v">no. 92-50.</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/rddc-drdc/DR52-19-77-1992-eng.pdf</marc:subfield>
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