000 00513nam a2200217Ia 4500
008 220901s9999 xx 000 0 und d
041 _a  ENGLISH
082 _a621
082 _bVIS
100 _aVISHWANATHAN, T.
245 0 _aTELECOMMUNICATION SWITCHING SYSTEMS AND NETWORKS.
250 _a2ND ED.
250 _b2015
260 _aDELHI
260 _bPHI LEARNING PVT. LTD
260 _c2015
300 _a620
650 _a  TELECOMMUNICATION
700 _aBHATNAGAR, MANAV
942 _cTB
999 _c137513
_d137513