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      <marc:subfield code="a">Co23-79/1985E-PDF </marc:subfield>
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      <marc:subfield code="a">Thibault, Louis, </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Group delay requirements for teletext transmission / </marc:subfield>
      <marc:subfield code="c">Louis Thibault.</marc:subfield>
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    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Government of Canada, Department of Communications = Gouvernement du Canada, Ministère des communications, </marc:subfield>
      <marc:subfield code="c">December 1985.</marc:subfield>
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      <marc:subfield code="a">1 online resource (iii, 51 pages) : </marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Innovation, Science and Economic Development Canada].</marc:subfield>
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      <marc:subfield code="a">Cover title.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"Various tolerance masks for monitoring the group delay response of a cable TV channel used for teletext transmission are proposed and discussed. The approach and concepts described in this paper, although developed for teletext transmission over cable TV networks, can be extended to any data transmission system"--Abstract.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
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      <marc:subfield code="a">Canada. </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_2019/isde-ised/Co23/Co23-79-1985-eng.pdf</marc:subfield>
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