000 00415nam a2200145Ia 4500
008 241225s9999 xx 000 0 und d
020 _a9788120307131
082 _a621.383
_bVIS
100 _aViswanathan , Thiagarajan.
245 0 _aTelecommunication switching systems and networks
260 _aNew Delhi :
_bPrentice Hall Of India PvtLtd,
_c1994
300 _a583.
365 _a250
650 _aApplied physics
999 _c32427
_d32427