TY  - BOOK
TI  - General Post Office Handbook for Radio Operators
U1  - 621.3841. 
PY  - 1961///
CY  - London
PB  - Her Majesty's Stationery Office
KW  - MCE
N1  - 0; 0; 0; 621_384100000000000__HAN; 0; 0; 0; 621_384100000000000__HAN
ER  -