1. The Effects of Occupation on Chronic Respiratory Disease
2. Roentgenographic Evidence of Coal Workers?? Pneumoconiosis in Three Geographic Areas in the United States
3. Lainhart, W. S. 1969.Pneumoconiosis in Appalachian Bituminous Coal MinersEdited by: Lainhart, W. S., Doyle, H. N., Enterline, P. E., Henschel, A. and Kendrick, M. A. 31–60. Pub. Health Ser. Publ. No. 2000
4. Nord, P. J. and Bingham, E. 1972.Trace Substances in Environmental Health - IV, Edited by: Hemphill, D. 341Columbia: University of Missouri.