[The state and principles of organization of ophthalmological aid to children in Leningrad].
D002648:Child; D003153:Community Health Services; D005128:Eye Diseases / Q000628:therapy*; D006801:Humans; D009934:Organization and Administration; D012426:Russia; D012572:School Health Services
Sostoianie i printsipy organizatsii oftal'mologicheskoĭ pomoshchi detiam v Leningrade.