Context

Context of I. Experiments upon volunteers to determine the cause and mode of spread of influenza, Boston, November and December, 1918, by M.J. Rosenau, W.J. Keegan, Joseph Goldberger, and G.C. Lake. II. Experiments upon volunteers to determine the cause and mode of spread of influenza, San Francisco, November and December, 1918... [U.S. Hygienic Laboratory Bulletin No. 123. February 1921.].