Telegraphy
By: by W. H. Preece and J. Sivewright.
Contributors: Sivewright, James, Sir, 1848-1916.
Edition: 9th ed., revised and enlarged.
Series: Text-books of science adapted for the use of artisans and students in public and science schools; Text-books of science
Publisher: Longmans, Green
Published: 1891
Place of publication: London
Language: eng
Number of pages: 396
Subjects: Telegraph.