Problems in etiological classifications of mental retardation.
Goodman
J F
JF
Graduate School of Education, Philadelphia, PA 19104-6216.
D002547:Cerebral Palsy / Q000523:psychology; D004314:Down Syndrome / Q000523:psychology; D006801:Humans; D008607:Intellectual Disability / Q000145:classification* / Q000175:diagnosis / Q000209:etiology; D007361:Intelligence Tests; D012959:Socioeconomic Factors