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New York American Geographical Socety 1936 .
xxii, 408 p. 0374954291 (ed. 1971)

By Ball, A. Gordon..
Ames Iowa State University Press 1972 .
viii, 404 p. , 920723 0813814405

Washington, D.C. The Bureau | For sale by the Supt. of Docs., U.S. G.P.O. 1990 .
v. 28 cm..

By Dunn, Edgar Streeter..
Gainesville University of Florida Press 1954 .
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