| 000 | 00342nam a2200145Ia 4500 | ||
|---|---|---|---|
| 005 | 20260205040859.0 | ||
| 008 | 260111s9999||||xx |||||||||||||| ||und|| | ||
| 082 | _a507 Un2S | ||
| 100 | _aUNESCO | ||
| 245 | 0 | _aUNESCO SOURCE BOOK FOR SCIENCE TEACHING | |
| 260 |
_aPARIS _c1957 |
||
| 300 | _a220 | ||
| 690 | _aTEACHING,;SOURCE | ||
| 942 | _cBK | ||
| 999 |
_c13556 _d13556 |
||