1. Pulmonary Asbestosis;Cooke;Brit. Med. Journ.,1917
2. “Asbestosis,” Encylopœdia Britannica.
3. Pulmonary Asbestosis in its Clinical Aspects;Oliver;Journ. Indust. Hyg.,1927
4. The Effects of Silica Dust upon the Lungs;Sayers;Amer. Journ. of Public Health,1927
5. Norris, G. W., and Landis, H. R. M. “Diseases of the Chest,” Third Ed., p. 521.