000 00248nam a22001217a 4500
003 OSt
100 _aRawat, D S
245 _aVigyan Shikshan
250 _a37th ed.
260 _aAgra
_bAgarwal Publication
_c2014
300 _a207p.
942 _2ddc
_cBK
999 _c4151
_d4151