Fogel, Robert William
Railroads and American economic growth : essays in econometrics history
Johns Hopkins Press, 1964
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McCormick, James M.
American foreign policy and process
Thomson, 2005
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Herrick, Christopher
Issues in American foreign policy
Longman, 2003
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Brown, William Adams
American foreign assistance
Brookongs Institutons, 1954
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McCamy, James L.
The administration of American foreign affairs
Alfred A. Knopf, 1952
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