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Search keyword:(Subject: Mental retardation Etiology)
Results:2items
Mental retardation and congenital malformations of the central nervous system / Josef Warkany, Ronald J. Lemire, M. Michael Cohen
est.. - Chicago : Year Book Medical Publishers , c1981
Books
Mental subnormality in the community : a clinical and epidemiologic study / [by] Herbert G. Birch [and others]
Baltimore : Williams & Wilkins Co. , 1970