[Lesions of the upper respiratory tract in workers engaged in the production of nitrogen fertilizers].
D004194:Disease; D005308:Fertilizers / Q000633:toxicity*; D009584:Nitrogen / Q000633:toxicity*; D012120:Respiration Disorders; D012137:Respiratory System; D012140:Respiratory Tract Diseases
D005308:Fertilizers; D009584:Nitrogen
FERTILIZERS/toxicology; NITROGEN/toxicology; RESPIRATORY SYSTEM/diseases