Context

Context of Epidemiologic studies of acute anterior poliomyelitis. I. Poliomyelitis in Iowa, 1910, II. Poliomyelitis in Cincinnati, Ohio, 1911, III. Poliomyelitis in Buffalo and Batavia, N.Y., 1912, by Wade H. Frost. [U.S. Hygienic Laboratory Bulletin No. 90. October 1913.].