Titlebook: Constructive Approximation; Special Issue: Fract Ronald A. DeVore,Edward B. Saff Book 1989 Springer Science+Business Media New York 1989 an

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Book 1988n mental retardation; (2) in- creased activity and visibility of parent advocacy/lobbying groups (e. g. , the Association for Children with Learning Disabilities); (3) the enact- ment of federal legislation designed to protect the rights of the handi- capped (e. g. , PL94-142); and (4) the populariz