Description of Some Ways of Interpreting the Principle of Activity When Applying it to School Work
| Autor: | Ayer, Adelaide M., English, Mildred, Hosic, James F., Mossman, Lois Coffey |
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| Zdroj: | Teachers College Record; July 1934, Vol. 35 Issue: 10 p65-76, 12p |
| Databáze: | Supplemental Index |
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