Descriptor
Source
Mental Retardation | 2 |
Author
Leff, Ruth B. | 2 |
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Leff, Ruth B. – Mental Retardation, 1975
Descriptors: Daily Living Skills, Exceptional Child Education, Instructional Materials, Mental Retardation

Leff, Ruth B. – Mental Retardation, 1974
Descriptors: Daily Living Skills, Equipment Evaluation, Exceptional Child Research, Mental Retardation