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Reistelephonezeichnung . Erfindung des Telefons Zeichnung der Versuchsanordnung von Philipp Reis de Wdwd CommonsHelper before de Philipp Reis PDold Original upload log page de Reistelephonezeichnung Luestling bytes no des Telefons Zeichnung der Versuchsanordnung von Philipp Reis BildPDalt Telephone by Philipp Reis History