000 00357nam a2200133Ia 4500
008 190704s9999 xx 000 0 und d
020 _a9788120307131
082 _a621.382 V822
100 _aVISWANATHAN,T.
245 0 _aTELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
260 _aNEW DELHI
_bPHI-Learning
_c2007
300 _axx+583p.,
942 _cBB
_2DDC
999 _c6922
_d6922