TY  - BOOK
TI  - Handbook of wireless telegraphy 1938
U1  - 621.383 21st ed
PY  - 1947///
CY  - London
PB  - His Majestys Stationery Office
KW  - Telecommunication
KW  - Telegraph, Wireless
N1  - Content: v.3: Wireless telegraphy theory
ER  -