000 00290nam a2200121Ia 4500
005 20260205054610.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a657.076 Si64G
100 _aSinghal , Praveen
245 0 _aGuide to Bharat sanchar nigam
260 _c2003
942 _cBK
999 _c141009
_d141009