TY  - BOOK
AU  - Valley,George E.
TI  - Vacuum tube amplifiers
T2  - Massachusetts Institute of Technology. Radiation Laboratory. Radiation laboratory series,
U1  - 621.3841324 
PY  - 1948///
CY  - New York, London
PB  - McGraw-Hill Book Co.
KW  - Amplifiers, Vacuum-tube
KW  - Electronic apparatus and appliances
N1  - Includes index
ER  -