[ON CHRONIC BRONCHITIS IN COAL MINERS OF THE DONBASS].
D001991:Bronchitis; D029481:Bronchitis, Chronic; D003031:Coal; D003032:Coal Mining; D006801:Humans; D009784:Occupational Diseases; D014586:USSR
D003031:Coal
BRONCHITIS; COAL MINING; OCCUPATIONAL DISEASES; USSR
O KHRONICHESKOM BRONKHITE U RABOCHIKH UGOL'NYKH SHAKHT DONBASSA.