000 00325nam a2200145Ia 4500
100 _aVaidya, Narendra
020 _a81-7629-181-1
365 _b250
942 _cBK
654 _a
245 _aScience teaching in schools
260 _aNew Delhi
_bDeep & Deep Publications
_c2003
082 _a375.5
300 _axxiv,504
999 _c369376
_d369376
041 _aeng