Historical information
Description: 460 pages. Published by His Majesty's Stationery Office - H.M Signal School. Published 1/3/1938. B.R 229. Admiralty Handbook of Wireless Telegraphy, Magnetism and Electricity Level of Importance: World.
Description: 460 pages. Published by His Majesty's Stationery Office - H.M Signal School. Published 1/3/1938. B.R 229. Admiralty Handbook of Wireless Telegraphy, Magnetism and Electricity Level of Importance: World.