TY  - BOOK
AU  - Witts,Alfred Thomas
TI  - Radio upkeep and repairs, for mateurs: a practical handbook on faultclearing and set maintenance 
U1  - 131 
PY  - 1942///
CY  - London
PB  - Sir ISAAC Pitman
KW  - Electronic mail systems
KW  - Evaluation
KW  - Wireless communication systems
ER  -