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  1. 1
    by Foxx, Richard M.
    Published 1982
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    Decreasing behaviors of severely retarded and autistic persons /
  2. 2
    Published 1994
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    Destructive behavior in developmental disabilities : diagnosis and treatment /
  3. 3
    by Scheerenberger, R. C.
    Published 1983
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    A history of mental retardation /

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