Correlates of habitual physical activity and organized sports in German primary school children
| Autor: | Kobel, S., Kettner, S., Kesztyüs, D., Erkelenz, N., Drenowatz, C., Steinacker, J.M. |
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| Zdroj: | In Public Health March 2015 129(3):237-243 |
| Databáze: | ScienceDirect |
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