Gardner William I. Behavior modification in mental retardation the education and rehabilitation of the mentally retarded adolescent and adult - - Chicago Aldine . Atherton 1971 - 379 p. 22 cm. - Modern applications in psychology . Mental Retardation, Behavior Therapy ISBN: 202250008 Subjects--Topical Terms: Behavior TherapyMental Retardation Dewey Class. No.: WM300 / GAR