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von Horn, J.C. (Autor),
Erschienen in South African journal for research in sport, physical education and recreation, 13 (1990), 1, S. 39-46, Lit.
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“...Merwe, P.A.B. van der...”Erschienen in South African journal for research in sport, physical education and recreation, 13 (1990), 1, S. 39-46, Lit.
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