Multiplex telephony and telegraphy by means of electric waves guided by wires
By: by George O. Squier ... Signal corps, U.S. army. Reprinted January, 1919
Series: Professional paper of the Signal corps, U.S. army
Publisher: Govt. print. off.
Published: 1919
Place of publication: Washington
Language: eng
Number of pages: 102
Subjects: Telephone; Telegraph
Notes: On verso of t.-p.: War department. Document no. 390. Office of the chief signal officer.

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