[Blindness and its causes in the population of the Belorussian SSR].
D000328:Adult; D000368:Aged; D001766:Blindness / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D008875:Middle Aged; D002094:Republic of Belarus; D012424:Rural Population; D014505:Urban Population
Slepota i ee prichiny u naseleniia Belorusskoĭ SSR.