[On occupational pulmonary emphysema and chronic bronchitis in coal mine workers].
M S
MS
SHNEIDER
D001991:Bronchitis; D029481:Bronchitis, Chronic; D003031:Coal; D006801:Humans; D008906:Mining; D009784:Occupational Diseases; D011656:Pulmonary Emphysema
D003031:Coal
BRONCHITIS; MINING; OCCUPATIONAL DISEASES; PULMONARY EMPHYSEMA