TY  - BOOK
AU  - Babani,Bernard B.
TI  - International radio tube encyclopaedia / 
U1  - 621.384132 BAB 
PY  - 1958///
CY  - London : 
PB  - Bernards , 
KW  - Electron tubes
N1  -  Introductory matter in English, French, and other languages;  [Supplement no. 1] A comprehensive radio valve guide. Book 4. [Inter national ed.] London, Bernards, 1960
ER  -