1. Barclay, A. E., Franklin, K. J., and Prichard, M. M. C. (1940). J. Radiol., 13, 410.
2. 1944): in these workers fibrosis due -to silica also comes into the picture. It is obviously important to recognize
3. HarroldB, ritG;Harding, H.E.; Tod, D.L.M.; McLaughlin, A.I.G.;JC..i, ndMuesterk,1944
4. 1939), and is not necessarily evidence of a disease
5. KHMeactyLtnaleues,g,HhEyl.Fgi..Hn,.,(,129A2a3.,1n)d31.4.7HG.iJ.l.,toHBnya,gr.rR,i.e,C(a1H9m.3b2.)J,..,31GL,rao9nu6ct.e,t,J.1,L.11A90.., and Harding, H. E. (1945). In the press.