000 00329nam a2200133Ia 4500
005 20260720174540.0
008 260720s2004 xx 000 0 und d
041 _aeng
082 _a500 NANS
100 _aNanda, V K
_9267989
245 _aScience education today
260 _aNew Delhi
_bAnmol Publisher
_c2004
300 _a341p
999 _c242067
_d242067