| 000 | 00376nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1973 xx 000 0 und d | ||
| 082 | _a507 U-4N | ||
| 100 | _aUnesco | ||
| 245 | 0 | _aNew Unesco source book for science teaching | |
| 260 |
_bParis _c1973 |
||
| 300 | _a270p | ||
| 650 | _aSCIENCE -- STUDY & TEACHING | ||
| 653 | _aSCIENCE -- STUDY & TEACHING | ||
| 942 |
_2ddc _cB |
||
| 999 |
_c47760 _d47760 |
||