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      <marc:subfield code="a">Co24-383/1978E-PDF</marc:subfield>
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      <marc:subfield code="a">Field, J. A. </marc:subfield>
      <marc:subfield code="q">(James A.)</marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="2">
      <marc:subfield code="a">A study on network planning models of Canadian data networks and the impact of interconnection and interworking / </marc:subfield>
      <marc:subfield code="c">by J.A. Field, H.C. Ratz, J.C. Majithia.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">[Department of Communications], </marc:subfield>
      <marc:subfield code="c">June 30, 1978.</marc:subfield>
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      <marc:subfield code="a">1 online resource (xi, 220 pages) : </marc:subfield>
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      <marc:subfield code="a">text</marc:subfield>
      <marc:subfield code="b">txt</marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
      <marc:subfield code="b">c</marc:subfield>
      <marc:subfield code="2">rdamedia</marc:subfield>
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      <marc:subfield code="a">online resource</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:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">"Contract No. 0SU77-00185."</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">"Project no. 704-12."</marc:subfield>
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    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references (page 214)</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="520" ind1=" " ind2=" ">
      <marc:subfield code="a">"The fundamental objective of the study was to develop a model for the tariff structure of each available data communications service so that statements could be made regarding : the conditions under which a particular service is most economical to a user, the changes that would occur if an interconnection of Infoswitch with the dial telephone network and/or interconnection of Datapac with the Telex network existed, the changes that would occur if interworking of the Datapac and Infoswitch networks existed, the most economical services for providing the data communications requirements of three specific user groups, namely, Electronic Funds Transfer Systems, COSTPRO, and the systems identified by the Government Telecommunications Agency"--Summary.</marc:subfield>
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      <marc:subfield code="a">Data transmission systems</marc:subfield>
      <marc:subfield code="x">Economic aspects</marc:subfield>
      <marc:subfield code="z">Canada.</marc:subfield>
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      <marc:subfield code="a">Packet switching (Data transmission)</marc:subfield>
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      <marc:subfield code="a">Computer networks</marc:subfield>
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      <marc:subfield code="a">Données</marc:subfield>
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      <marc:subfield code="x">Aspect économique</marc:subfield>
      <marc:subfield code="z">Canada.</marc:subfield>
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      <marc:subfield code="a">Commutation de paquets.</marc:subfield>
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      <marc:subfield code="a">Réseaux d'ordinateurs</marc:subfield>
      <marc:subfield code="z">Canada.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Department of Communications.</marc:subfield>
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      <marc:subfield code="a">University of Waterloo. </marc:subfield>
      <marc:subfield code="b">Research Institute.</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">9.74 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-383-1978-eng.pdf</marc:subfield>
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