| 000 | 00374nam a2200145Ia 4500 | ||
|---|---|---|---|
| 999 |
_c25501 _d25501 |
||
| 008 | 190711s9999 xx 000 0 und d | ||
| 020 | _a0070342490 | ||
| 082 | _a621.382 K42 | ||
| 100 | _aKessler, Gary C | ||
| 100 | _aSouthwick, Peter V | ||
| 245 | 0 |
_aISDN _bConcepts, Facilities, and Services |
|
| 260 |
_aNew York _bMcGraw-Hill _c1997 |
||
| 300 | _a24X16 | ||
| 942 | _cBK | ||