title: Grain dust and health. II. Early diagnosis in occupational pulmonary disease: Discussion.
mesh_terms: D003011:Closing Volume; D002523:Edible Grain; D005069:Evaluation Studies as Topic; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis*; D008176:Lung Volume Measurements; D009584:Nitrogen; D009784:Occupational Diseases / Q000175:diagnosis*
chemical_list: D009584:Nitrogen