| 000 | 00337nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 211214s9999 xx 000 0 und d | ||
| 040 | _cJayakar Knowledge Resource Centre | ||
| 245 | 0 | _aInventors of apparatus and materials for teaching science. | |
| 260 |
_bUNESCO _aPARIS _c1950 |
||
| 300 | _a144p p. | ||
| 653 | _aEDUCATION | ||
| 942 | _c1 | ||
| 999 |
_c28758 _d28758 |
||