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  1. 1
    由 Forrester, Chris
    出版 2000
    主题 “...Television broadcasting United States....”
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    The business of digital television /
  2. 2
    由 Smulyan, Susan
    出版 1994
    主题 “...Radio broadcasting Economic aspects United States History....”
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    Selling radio : the commercialization of American broadcasting, 1920-1934 /
  3. 3
    由 Owen, Bruce M.
    出版 1999
    主题 “...Television broadcasting United States Forecasting....”
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    The Internet challenge to television /

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