| 000 | 00391nam a2200133Ia 4500 | ||
|---|---|---|---|
| 100 | _aVaidya, Narendera | ||
| 365 | _b11 | ||
| 942 | _cBK | ||
| 654 | _a | ||
| 245 |
_aHow children discover knowledge _bTheoretical and practical foundations of student investigations in science |
||
| 260 |
_aNew Delhi _bOxford & IBH Publishing Company _c1974 |
||
| 082 | _a375.5 | ||
| 300 |
_bHb _c21.8 _axvi,315 |
||
| 999 |
_c380693 _d380693 |
||
| 041 | _aeng | ||