title: USE OF THE ILO CLASSIFICATION IN THE STUDY OF SILICOSIS. THE INTERNATIONAL CLASSIFICATION OF ROENTGENOGRAMS (1958) WITH SLIGHT MODIFICATIONS.
mesh_terms: D002965:Classification; D006801:Humans; D007391:International Cooperation; D013902:Radiography, Thoracic; D012106:Research; D012829:Silicosis
keywords: CLASSIFICATION; INTERNATIONAL COOPERATION; SILICOSIS; THORACIC RADIOGRAPHY