| 000 | 00319nam a2200097Ia 4500 | ||
|---|---|---|---|
| 008 | 120224s9999 xx 000 0 und d | ||
| 082 |
_a507 _bRIC |
||
| 100 | _aRichmond, P.E. | ||
| 245 | _aNew trends in integrated science teaching | ||
| 260 |
_bUnited Nations Educational, Scientific and Cultural Organiza _aParis _c1977 |
||
| 999 |
_c139478 _d139478 |
||