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  1. Rossberg, Ehrhard [Author]; Korta, Helmut [Author]

    Teleprinter switching

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    Princeton, New Jersey [u.a.]: Van Nostrand, 1960

  2. Wüsteney, .. [Author] ; Wernerwerk Berlin

    Lochstreifengeräte für Fernschreiber

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    Berlin-Siemensstadt: Siemens & Halske AG, Wernerwerk, [ca. 1938]

  3. Harrison, Harry Hughes [Author]

    Printing telegraph systems and mechanisms

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    London [u.a.]: Longmans, Green, 1923

    Published in: Manuals of telegraph & telephone engineering