000 00302nam a2200109Ia 4500
008 230222s9999 xx 000 0 und d
082 _a621.382
100 _aThiagarajan Viswanathan
245 0 _aTelecommunications Switching Systems and Networks
260 _bPrentice Hall Of India
_c2004
942 _cBK
999 _c10814
_d10814