Philips Telecommunication Review.
Philips Telecommunication Review.
- Hilversum : N.V.Philips Telecommunicatie Industrie, 1968.
- v. : gráficos.,fotos ; 29 cm.
El texto viene de la p.105 a la 148.
V.27 N.3 Reed switches for telephony switching. Amplitude-modulated voice-frequency telegraph system type 3TR 1100.
El texto viene de la p.105 a la 148.
V.27 N.3 Reed switches for telephony switching. Amplitude-modulated voice-frequency telegraph system type 3TR 1100.