[On the condition of the upper respiratory tract in coal miners].
D003031:Coal; D003032:Coal Mining; D004194:Disease; D006801:Humans; D009666:Nose; D009784:Occupational Diseases; D012120:Respiration Disorders; D012137:Respiratory System; D012140:Respiratory Tract Diseases
D003031:Coal
COAL MINING; OCCUPATIONAL DISEASES; RESPIRATORY SYSTEM/diseases