Opis
Opis knjige/članka:"A symposium held May 11-12, 1971, co-sponsored by the Rose F. Kennedy Center for Research in Mental Retardation and Human Development, Albert Einstein College of Medicine, Yeshiva University; and the Mental Retardation Program of the National Institute of Child Health and Human Development, National Institutes of Health."
Fizični opis:xxi, 155 p. illus. 24 cm.
Bibliografija:Bibliography: p. [141]-151.
ISBN:083910717X