| 000 | 00281 a2200085 4500 | ||
|---|---|---|---|
| 100 | 1 |
_aWelch, Samuel. _eAutor |
|
| 245 | 0 |
_aSignalling in Telecommunications Networks / _cWelch Samuel. |
|
| 710 | 2 |
_aPeregrinus. _eWydawca _4pbl |
|
| 260 |
_aStevenage, Herts : _bPeregrinus, _c1979. |
||
| 300 |
_aXIII, 382 s.; _c25 cm. |
||
| 999 |
_c13606 _d13606 |
||