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von Zyl, C.J. van (Autor),
Erschienen in South African journal for research in sport, physical education and recreation, 12 (1989), 1, S. 53-64, Lit.
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“...Uken, E.-A....”Erschienen in South African journal for research in sport, physical education and recreation, 12 (1989), 1, S. 53-64, Lit.
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