American telegraphy and encyclopedia of the telegraph: systems, apparatus, operation.
Subtitle: Embracing electrical testing; primary and storage batteries; dynamo machines; Morse, duplex, quadruplex, multiplex, submarine, automatic, and wireless telegraphy; burglar-alarm, fire-alarm, and police-alarm telegraphy; printing telegraphy; military and naval signaling; railway block systems; telegraph wire, cables, and conduits; etc.
By: by William Maver, jr. 656 pages, 490 illustrations.
Publisher: Maver publishing company
Published: 1903
Place of publication: New York
Language: eng
Number of pages: 656