000 00381nam a2200157Ia 4500
008 250328b |||||||| |||| 00| 0 eng d
020 _a81-7888-184-5
041 _aeng
100 _aDash, B. N.
245 _aTeaching of science
260 _aNew Delhi
_bDominant Publishers and Distributors
_c2004
300 _a4154
365 _b450
942 _cBK
999 _c396089
_d396089