Vnitr Lek 1965, 11(7):638-645
[Repeated studies of coal miners during 5 years with special consideration of chronic bronchitis and pulmonary emphysema].
Keywords: Adult; Bronchitis, epidemiology, ; Coal Mining; Humans; Middle Aged; Occupational Diseases, epidemiology, ; Pulmonary Emphysema, epidemiology,
Published: July 1, 1965 Show citation