Sundel,, Sandra S. Behavior modification in the human services : a systematic introduction to concepts and applications / Sandra S. Sundel, Martin Sundel

Behavior modification in the human services : a systematic introduction to concepts and applications / Sandra S. Sundel, Martin Sundel . - Newbury Park : Sage, cop. 1993 . - XXII, 346 p. 26 cm
0-8039-3416-5 (Brochado)

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