Hitler vs. Roosevelt : the undeclared naval war / Thomas A. Bailey and Paul B. Ryan. Bailey, Thomas Andrew, 1902-1983. Ryan, Paul B., joint author. Roosevelt, Franklin D. (Franklin Delano), 1882-1945. Hitler, Adolf, 1889-1945. World War, 1939-1945 Naval operations, American. World War, 1939-1945 Naval operations, German. World War, 1939-1945 Naval operations Submarine. D773 .B28 1979 940.54 BAI Includes bibliographical references and index. New York : Free Press, c1979. c1979. 1979 Text xi, 303 p., [4] leaves of plates : eng