| 000 | 00447nam a2200145Ia 4500 | ||
|---|---|---|---|
| 008 | 170101s1974 xx 000 0 und d | ||
| 082 | _a507 U-4N | ||
| 100 | _aUnesco | ||
| 245 | 0 | _aNew Trends in the utilization of educational technology for science education | |
| 260 |
_bParis _c1974 |
||
| 300 | _a248p | ||
| 650 | _aSCIENCE - STUDY & TEACHING - AUDIO - VISUAL AIDS | ||
| 653 | _aSCIENCE - STUDY & TEACHING - AUDIO - VISUAL | ||
| 942 |
_2ddc _cB |
||
| 999 |
_c61823 _d61823 |
||