[Experience in improving mass prevention of myopia among rural schoolchildren].
D002648:Child; D006801:Humans; D009216:Myopia / Q000517:prevention & control*; D011314:Preventive Health Services / Q000458:organization & administration*; D012424:Rural Population; D012572:School Health Services / Q000458:organization & administration*; D014586:USSR
Opyt ratsionalizatsii massovoĭ profilaktiki blizorukosti u sel'skikh shkol'nikov.