[Hygienic conditions in rural schools and myopia in students].
D002648:Child; D006801:Humans; D007223:Infant; D009216:Myopia; D012572:School Health Services; D012574:Schools; D013334:Students
MYOPIA/in infant and child; SCHOOL HEALTH
Gigienicheskie usloviia obucheniia v sel'shikh shkolakh i blizorukost' shkol'nikov.