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Roentgenological Appearances in Silicosis and the Underlying Pathological LesionsPancoast, H. K.; Pendergrass, E. P.; Riddell, A. R.; Lanza, A. J.; McConnell, Wm. J.; Sayers, R. R.; Sampson, H. L.; Gardner, L. U. · Public Health Reports (1896-1970) · 1935