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3. A.A.H.P.E.R. Physical activities for the mentally retarded, ideas for instruction. Washington 1968e.
4. A.A.H.P.E.R. A practical guide for teaching the mentally retarded to swim. Washington 1968d. Auxter, D.: Basic movement experiences for the mentally retarded. In: A.A.H.P.E.R.: The Best of Challenge. Washington 1971.
5. Bach, H.: Die psychomotorische Erziehung unter besonderer Berücksichtigung geistig behinderter Kinder. Heilpädagogische Werkblätter 39, 272–273 (1970).