A brief history of the International Association for the Scientific Study of Mental Deficiency (IASSMD)
Clarke
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D004495:Education of Persons with Intellectual Disabilities / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D008607:Intellectual Disability / Q000266:history*; D007391:International Cooperation / Q000266:history*; D012958:Societies, Scientific / Q000266:history*