000 00297nam a2200121Ia 4500
020 _a9788131705636
100 _aStallings William
_94144
245 _aISDN and Broadband ISDN with Frame Relay and ATM
250 _a4ED
260 _bPearson Edu Cation
300 _a552p.
_bRs:475
490 _a17037
999 _c17037
_d17037