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| 005 | 20210219152824.0 | ||
| 008 | 991125n 000 0 eng u | ||
| 035 | _aUPN01000062361 | ||
| 100 | 1 | _aKlopfer, Leopold E | |
| 222 | _aSCIENCE EDUCATION | ||
| 245 | _aA summary of research in science education : 1990 | ||
| 300 | _a239-338 | ||
| 362 | 0 | _a1992 Vol. 76 no. 3 | |
| 653 | 0 | _aEDUCACION CIENTIFICA | |
| 653 | 0 | _aEDUCACION SECUNDARIA | |
| 653 | 0 | _aINVESTIGACION EDUCATIVA | |
| 904 |
_aAC _b000172 |
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| 905 | _aArticulo | ||
| 999 |
_c61682 _d61682 |
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