[BRONCHOGRAPHIC STUIDES ON PNEUMOCONIOSIS OF  COAL MINERS].
D001699:Biometry; D001995:Bronchography; D003031:Coal; D003032:Coal Mining; D006801:Humans; D007564:Japan; D011009:Pneumoconiosis; D013223:Statistics as Topic
D003031:Coal
BRONCHOGRAPHY; COAL MINING; JAPAN; PNEUMOCONIOSIS; STATISTICS