Telephony a detailed exposition of the telephone exchange systems of the British post office
| Glavni avtor: | |
|---|---|
| Format: | Knjiga |
| Jezik: | English |
| Izdano: |
London
Pitman
1948, 1958.
|
| Glavni avtor: | |
|---|---|
| Format: | Knjiga |
| Jezik: | English |
| Izdano: |
London
Pitman
1948, 1958.
|