International radio tube encyclopaedia
Babani, B.B.
International radio tube encyclopaedia (Book) - 3rd ed. - Hackensack, N.J. Wehman Bros 1958 - various pagings 26 cm.
Electron tubes
621.387 (038) BAB / 10628
International radio tube encyclopaedia (Book) - 3rd ed. - Hackensack, N.J. Wehman Bros 1958 - various pagings 26 cm.
Electron tubes
621.387 (038) BAB / 10628