000 00249nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _bNCE
100 _aNCERT
245 0 _aChemistry-1 (XII)
260 _bNCERT
_c2008
300 _a280
942 _cBK
999 _c2696
_d2696