Langer, William L. <br/><br/>
Challenge to isolation, 1937-1940 
by William L. Langer and S. Everett Gleason 
 - New York  Harper  1952 
 - 794p. 
<br/><br/> Council on Foreign Relations 
<br/><br/><label>Subjects--Topical Terms: </label><br/>United States --Foreign relations --1933-1945<br/>World War, 1939-1945 --Diplomatic history<br/>World War, 1939-1945 --United States
<br/><br/><label>Dewey Class. No.: </label>Dx73 L262c