The heliograph
Subtitle: a short history
By: by Alan Harfield.
Contributors: Royal Signals Museum (Great Britain)
Edition: 2nd rev. ed.
Publisher: Royal Signals Museum
Published: 1986
Place of publication: Blandford Camp, Dorset
Language: eng
Number of pages: 74
Subjects: Heliograph -- History.; Great Britain -- Armed Forces -- Communication systems -- History -- 19th century.; Great Britain -- Armed Forces -- Communication systems -- History -- 20th century.
Notes: Bibliography: p. 67.
"Early signalling equipment"--Cover.
Includes index.