Specifications for the multiplex printing telegraph system
Subtitle: theory and operation
By: Western Union Telegraph Company.
Publisher: The Company
Published: 1920
Place of publication: [New York?]
Language: eng
Number of pages: 314
Subjects: Telegraph -- Multiplex systems.; Telegraph -- Handbooks, manuals, etc.
Genres: Handbooks, manuals, etc.
Other titles: Multiplex printing telegraph system.