000 00301nam a2200109Ia 4500
008 230222s9999 xx 000 0 und d
082 _a621.382
100 _aThiagarajan Viswanathan
245 0 _aTelecommunication Switching Systems and Networks
260 _bPrentice Hall Of India
_c2006
942 _cBK
999 _c10941
_d10941