000 00250nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aKulshreshtha, A.K.
245 0 _aVigyan Shikshan
260 _aMeerut
_bRLB
_c2010
300 _a612p.
942 _cBK
999 _c12573
_d12573