000 00335nam a2200133Ia 4500
005 20251003125619.0
008 251003s9999 xx 000 0 und d
082 _a005.1
100 _aGnanasivam
245 0 _aTelecommunication Switching & Networks
260 _bNew Age International
_aNew Delhi
_c2006
300 _a322
942 _cBK
999 _c36121
_d36121