| 000 | 00493nam a2200121 4500 | ||
|---|---|---|---|
| 245 |
_aSummary of research in science education for the years of 1968-69, secondary school level _cby Wayne W.Welch |
||
| 100 | _aWelch, Wayne W. | ||
| 260 |
_aOhio _bERIC Information Analysis Center for Science, Mathematics & Environmental Education _c1971 |
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| 300 | _a60p.; 28cm.- | ||
| 490 | _aScience education information : research review series science paper; no. 7 | ||
| 082 |
_a507.2 _bWEL |
||
| 041 | _aeng | ||
| 999 |
_c48168 _d48168 |
||