The child with Down's syndrome (mongolism) : causes, characteristics and acceptance ; for parents, physicians and persons concerned with his education and care / David W. Smith and Ann Asper Wilson.

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The child with Down's syndrome (mongolism) : causes, characteristics and acceptance ; for parents, physicians and persons concerned with his education and care / David W. Smith and Ann Asper Wilson. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.