000 00271nam a22001217a 4500
003 OSt
082 _a507 CHA
100 _aChaturvedi, Snehlata
245 _aVigyan Shikshan Path Yojnayen
260 _aAgra
_bAgarwal Publication
_c2015
300 _a124p.
942 _2ddc
_cBK
999 _c4278
_d4278