TY  - BOOK
AU  - Geppert,Donovan V.
TI  - Basic electron tubes
T2  - McGraw-Hill electrical and electronic engineering series
U1  - 621.384132 
PY  - 1951///
CY  - New York
PB  - McGraw-Hill
KW  - Vacuum-tubes
KW  - Electronics
N1  - Includes index
ER  -