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Washington, D.C. : Carnegie Institution of Washington, 1930-35.
Washington, D.C. : Carnegie Institution of Washington, 1930-1935.
New York : Octagon Books, 1965.
The Journal of modern history, 1936-03, Vol.8 (1), p.104-105
The Journal of modern history, 1931-06, Vol.3 (2), p.291-291
Annales, 1932, Vol.4 (16), p.411-411
Washington, D.C. : Carnegie Institute, 1930-
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