Abstract
The material on which this article is based was collected during a survey carried out under the auspices of the International Society for the Welfare of Cripples and of the International Union for Child Welfare, with the endorsement of UNESCO and financial support from the World Rehabilitation Fund, the Association for the Aid of Crippled Children, the Easter Seal Research Foundation of the National Society for Crippled Children and Adults, and the National Foundation. This is the first of a series by the authors.
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