[Study of pulmonary function in the 50-year-old coal miner].
D000368:Aged; D000369:Aged, 80 and over; D000874:Anthracosilicosis; D003031:Coal; D006801:Humans; D008168:Lung; D012119:Respiration
D003031:Coal
ANTHRACOSILICOSIS/in old age; RESPIRATION/in old age