000 00346nam a2200145Ia 4500
008 220105s9999 xx 000 0 und d
041 _aENGLISH
082 _a621.380413
100 _a"Viswanathan, Thiagarajan"
245 0 _aTelecommunication Switching Systems and Networks
250 _n1
260 _bPhi
365 _b275
942 _cBK
999 _c203101
_d203101