000 00300nam a2200121Ia 4500
008 220901s9999||||xx |||||||||||||| ||und||
082 _a621.381 BSN
100 _aBSNL
245 0 _aTelecommunications
250 _aVol. 57 Issue No. 2 & 3
260 _bBSNL
_c2007
650 _aWireless communication
999 _c193618
_d193618