Research abstracts
| Autor: | McAshan, H. H., Twyford, L., Asher, J. J., Burger, E. |
|---|---|
| Zdroj: | Educational communication and technology : EC & TJ; July 1961, Vol. 9 Issue: 4 p230-232, 3p |
| Databáze: | Supplemental Index |
| Externí odkaz: |
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| Autor: | McAshan, H. H., Twyford, L., Asher, J. J., Burger, E. |
|---|---|
| Zdroj: | Educational communication and technology : EC & TJ; July 1961, Vol. 9 Issue: 4 p230-232, 3p |
| Databáze: | Supplemental Index |
| Externí odkaz: |
|