| 000 | 00464nam a22001577a 4500 | ||
|---|---|---|---|
| 008 | 230607b |||||||| |||| 00| 0 eng d | ||
| 020 | _a0906048044 | ||
| 040 |
_aNational Science Library _cNational Science Library |
||
| 080 |
_a621.391 _bL9 |
||
| 100 |
_aWelch, Samuel _911055 |
||
| 245 | _aSignalling in telecommunications networks | ||
| 260 |
_aOxford: _bPeter Peregrinus, _c1979 |
||
| 300 | _axiii, 382p. | ||
| 650 | _aTelecommunication | ||
| 942 |
_2udc _cBK |
||
| 999 |
_c40173 _d40173 |
||