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von Ryan, E. Dean (Autor)
Erschienen in The research quarterly of the American Association for Health, Physical Education and Recreation, Washington D.C., 41 (1970), 4, S. 542-551, Lit.
Verfügbarkeit
Erschienen in The research quarterly of the American Association for Health, Physical Education and Recreation, Washington D.C., 41 (1970), 4, S. 542-551, Lit.