Trends and problems in the education of the mentally retarded: 1800-1940.
D000223:Adaptation, Psychological; D003156:Community Mental Health Services; D004495:Education of Persons with Intellectual Disabilities / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D007398:Interpersonal Relations; D012050:Rehabilitation, Vocational