Multiplex telephony and telegraphy by means of electric waves guided by wires.

Bibliographic Details
Corporate Author:	United States. Army. Signal Corps
Other Authors:	Squier, George Owen, 1865-1934
Format:	Government Document eBook
Language:	English
Published:	Washington : U.S. GPO, 1911.
Series:	War Dept. Doc. No. 390
Subjects:	United States. > Army. > Signal Corps. Physics. Telegraph. Telephone. Electronic books.
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