TY  - BOOK
AU  - 
TI  - Data and circuits of receiver and amplifier valves
U1  - 621.384 
PY  - 1949///
CY  - Eindhoven, Holland
PB  - N. V. Philips Gloeilampenfabrieken
KW  - Radio -- Receivers And Reception
N1  - 1st Supplement
ER  -