000 00249nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aMittal, G.L.
245 0 _aVigyan
260 _aMeerut
_bNageen Prakashan
_c2009-
300 _a430p.
942 _cBK
999 _c14858
_d14858