The effect of private tutoring on performance in mathematics in Turkey: A comparison across occupational types
| Autor: | Ünal, Hasan, Özkan, E. Mehmet, Milton, Sande, Price, Kacey, Curva, Fely |
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| Zdroj: | In Procedia - Social and Behavioral Sciences 2010 2(2):5512-5517 |
| Databáze: | ScienceDirect |
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