School-based opportunities for physical activity in West Virginia public schools
| Autor: | O'Hara Tompkins, Nancy *, Zizzi, Sam, Zedosky, Lenore, Wright, Jessica, Vitullo, Elizabeth |
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| Zdroj: | In Preventive Medicine 2004 39(4):834-840 |
| Databáze: | ScienceDirect |
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Full Text from ScienceDirect