http://pec.lib.wvu.edu/record/P7121914Report of the Sanitary Survey Commission of the West Virginia State Board of Health : an intensive study of the prevalence of intestinal parasites among the coal miners of McDowell County.<p> Pamphlet. "Professor W. H. Schultz, Ph. D., Messrs. C. O. Gorby, H. C. Bray and Wilbur Shirkey."</p>West Virginia. State Board of Health. Sanitary Survey Commission.Coal miners--Diseases--West Virginia--McDowell County.Intestines--Diseases.14256