TY  - BOOK
TI  - Radio valve data: characteristics of 7,000 valves and cathode-ray tubes
U1  - 621.3841 
PY  - 1966///
CY  - London
PB  - Iliffe
KW  - Vacuum-tubes
N1  - 0; 0; 0; 621_384100000000000_RAD
ER  -