PULMONARY CHANGES IN SHIPYARD ARC-WELDERS.
D000386:AIDS-Related Complex; D000293:Adolescent; D006801:Humans; D008168:Lung; D008171:Lung Diseases; D009784:Occupational Diseases; D009790:Occupations; D014896:Welding
ADOLESCENCE; LUNG DISEASES; OCCUPATIONAL DISEASES; WELDING