000 | 00313nam a2200121Ia 4500 | ||
---|---|---|---|
008 | 220421s1991 xx 000 0 und d | ||
041 | _aeng | ||
082 |
_a507 _bDAS/SCI |
||
100 |
_aDas ,R.C. _9570033 |
||
245 | _aScience teaching in schools | ||
250 | _a2nd ed | ||
260 |
_aN delhi _b Anmol Publications _c1991 |
||
999 |
_c396134 _d396134 |