[CHRONIC BRONCHITIS, PULMONARY EMPHYSEMA AND PULMONARY HEART DISEASE IN RAILROAD WORKERS].
D001991:Bronchitis; D029481:Bronchitis, Chronic; D006801:Humans; D009784:Occupational Diseases; D011656:Pulmonary Emphysema; D011660:Pulmonary Heart Disease; D011890:Railroads
BRONCHITIS; OCCUPATIONAL DISEASES; PULMONARY EMPHYSEMA; PULMONARY HEART DISEASE
CHRONICK'A BRONCHITIDA, ROZEDMA PLIC A CORPULMONALE U  ZELEZNI C'A RU.