| 000 | 003430000a22001330004500 | ||
|---|---|---|---|
| 245 | _aTelecommunications switching principles | ||
| 100 | _aHills, M.T. | ||
| 260 |
_aLondon _bAllen & Unwin _c1979 |
||
| 440 | _aTelecommunications systems design; 2 | ||
| 080 |
_a621.39 _bH5 |
||
| 650 | _aTelecommunication | ||
| 041 | _aEN | ||
| 942 | _cBK | ||
| 999 |
_c110518 _d110518 |
||