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von Calder, S.L. (Autor),
Erschienen in South African journal for research in sport, physical education and recreation, 14 (1991), 1, S. 17-22, Lit.
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“...Calder, S.L....”Erschienen in South African journal for research in sport, physical education and recreation, 14 (1991), 1, S. 17-22, Lit.
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