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  1. 1
    af Headrick, Daniel R.
    Udgivet 1991
    Fag “...Telecommunication History....”
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    The invisible weapon : telecommunications and international politics, 1851-1945 /
  2. 2
    af Marvin, Carolyn
    Udgivet 1988
    Fag “...Telecommunication History 19th century....”
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    When old technologies were new : thinking about electric communication in the late nineteenth century /

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