000 00334nam a2200121Ia 4500
008 250430s9999||||xx |||||||||||||| ||und||
082 _aVIS
_b.004.16
100 _aVISWANATHAN THIAGARAJAN
_957852
245 0 _aTELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS
260 _bPHI LEARNING
_aNEW DELHI
_c2006
300 _a583
942 _cBK
999 _c68302
_d68302