000 00257nam a22001217a 4500
999 _c38539
_d38539
003 OSt
100 _aShrivastava, Roma
245 _aSamajik Vigyan Shikshan
260 _aAgra
_bAggarwal Pub.
_c2015
300 _a352p.
901 _a6063BED
942 _2ddc
_cBK