TY  - BOOK
AU  - Eastman,Austin Vitruvius
TI  - Fundamentals of vacuum tubes
T2  - McGraw-Hill electrical and electronic engineering series
U1  - 537.53 
PY  - 1949///
CY  - New York
PB  - McGraw-Hill Book Co.
KW  - Vacuum-tubes
N1  - Include index
ER  -