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| Age Differences | 1 |
| Elementary Secondary Education | 1 |
| Exceptional Child Research | 1 |
| Incidence | 1 |
| Mental Retardation | 1 |
| Multiple Disabilities | 1 |
| Rural Urban Differences | 1 |
| Sex Differences | 1 |
| Speech Handicaps | 1 |
| Stuttering | 1 |
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| Illinois | 1 |
| Pennsylvania | 1 |
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Peer reviewedBrady, William A.; Hall, Donald Elliott – Language, Speech, and Hearing Services in Schools, 1976
Descriptors: Age Differences, Elementary Secondary Education, Exceptional Child Research, Incidence
