...Climatic cycles and human population in the Great plains - Clements, Frederic Edward, 1874- (Washington, D.C. : Carnegie Institution of Washington, 1938)
Reprinted from the Scientific monthly, September, 1938, vol. xlvii, no. 3, p. 193-210.
References : p. 18-19.
Keywords: Climatology; United States -- Climate; United States -- Population