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      <marc:subfield code="a">Spectrum 20/20 </marc:subfield>
      <marc:subfield code="d">(1989 : </marc:subfield>
      <marc:subfield code="c">Montreal, Quebec)</marc:subfield>
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      <marc:subfield code="a">Spectrum 20/20 '89 : </marc:subfield>
      <marc:subfield code="b">innovations : sharing the challenge : proceedings : Montreal, Quebec, November 28 and 29, 1989 = Spectre 20/20 '89 : innovations : le défi commun : actes : Montréal, Québec, les 28 et 29 novembre 1989.</marc:subfield>
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      <marc:subfield code="a">Spectre 20/20 '89 : innovations : le défi commun : actes : Montréal, Québec, les 28 et 29 novembre 1989</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Radio Advisory Board of Canada = Conseil consultatif canadien de la radio, </marc:subfield>
      <marc:subfield code="c">[1989]</marc:subfield>
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      <marc:subfield code="a">"Jointly sponsored by the Radio Advisory Board of Canada (RABC) and the Department of Communications of Canada (DOC)."</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">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"The first symposium of this kind was held in 1987. Since that time, spectrum usage has become increasingly congested as a multitude of diverse users clamor for their share; e.g. space services, land-mobile, fixed, broadcasting, etc. The challenge of fairly allocating these limited resources and at the same time ensuring future needs are satisfied, will require creative management and the need for open discussions among users"--RABC President.</marc:subfield>
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      <marc:subfield code="a">Text in English and French.</marc:subfield>
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      <marc:subfield code="a">Radio waves</marc:subfield>
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      <marc:subfield code="a">Radio frequency allocation</marc:subfield>
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      <marc:subfield code="v">Congresses.</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">Radio Advisory Board of Canada.</marc:subfield>
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      <marc:subfield code="t">Spectrum 20/20 '89 : </marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">28.70 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2019/isde-ised/Co22/Co22-369-1989.pdf</marc:subfield>
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