000 00245nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aNCERT
245 0 _aTeaching Of Science 1.1
260 _aNCERT
_bNCERT
_c2006
300 _a38p.
942 _cBK
999 _c11672
_d11672