TY  - BOOK
AU  - Eastman,Austin Vitruvius
TI  - The four element tube as an audio amplifier,
T2  - Washington (State) University. Engineering Experiment Station. Engineering Experiment Station series. Bulletin
AV  - TK6565.A55 E3
PY  - 1930///
CY  - Seattle
PB  - The University of Washington
KW  - Radio
ER  -