000 00290nam a2200133Ia 4500
008 221229s9999 xx 000 0 und d
100 _aNCERT
245 0 _aScience for class vii
250 _a1st
260 _aNew Delhi
_bNCERT
_c2007
300 _a233
650 _aEducation
942 _cBK
999 _c6964
_d6964