TY  - BOOK
TI  - Philips Data Handbook Electron Tubes 
U1  - 621.38102 
PY  - 1982///
CY  - Netherlands : 
PB  - Philips Company, 
KW  - Electronic Tubes Handbooks Manuals
N1  - NN; Pt. 11. 11 Microwave Semi Condector
ER  -