Author Topic: The telephone, the microphone and the phonograph 1879  (Read 1057 times)

Offline HELLO CENTRAL

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The telephone, the microphone and the phonograph 1879
« on: September 07, 2008, 03:17:34 PM »
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The telephone, the microphone and the phonograph 1879

The telephone, the microphone and the phonograph - Du Moncel, Th., comte, 1821-1884
Keywords: Telephone; Microphone; Phonograph


http://www.archive.org/details/telephonemicroph00dumorich

Walt S.
« Last Edit: September 07, 2008, 04:29:09 PM by HELLO CENTRAL »
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