The interconnection of telephone systems --- graded multiples /
| Hlavní autor: | |
|---|---|
| Typ dokumentu: | Kniha |
| Jazyk: |
angličtina |
| Vydavatel: |
New York :
Bell Telephone Laboratories,
1931.
|
| Edice: |
Bell Telephone System technical publications. Monograph ;
B-599 (Telephony) |
|
|