TY  - BOOK
AU  - Radio Valve Data, 
TI  - Radio Valve Data
U1  - 537.534 
PY  - 1949///
CY  - Kottayam
PB  - Mcgraw Hill Book Company
KW  - General Stack
KW  - Natural Sciences
KW  - PhysicsElectricityElectronics
KW  - Generalia
ER  -