| 000 | 00339nam a2200085Ia 4500 | ||
|---|---|---|---|
| 008 | 120229s9999 xx 000 0 und d | ||
| 082 | _a507.05 INV | ||
| 245 | _aInvestigations in science education : expanded abstracts and critical analyses of recent research | ||
| 260 |
_bCenter for Science & Mathematics Education _aColumbus, Ohio _c1974 |
||
| 999 |
_c114277 _d114277 |
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