TY  - BOOK
AU  - Fleming, J.A..
TI  - The Thermionic Valve: and its Developments in Radiotelegraphy and Telephony
U1  - 537.53 
PY  - 1919///
CY  - New York
PB  - The Wireless Press, Ltd.
KW  - Radiotelegraphy-Thermionic Valve
KW  - G-Physics
ER  -