The undeclared war, 1940-1941 - Langer, William L. (William Leonard), 1896-1977.; Gleason, Sarell Everett, 1905- (Mass P. Smith : Gloucester, 1968)
Bibliographical footnotes.
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Keywords: World War, 1939 -- 1945 -- Diplomatic history; World War, 1939 -- 1945 -- United States; United States -- Foreign relations -- 1933 -- 1945