Changing environment of international relations. 

 - n.p.  s.n.  1956. 
 - ix, 158 p. 22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations<br/>World politics--1945-
<br/><br/><label>Subjects--Geographic Terms: </label><br/>U.S. foreign relations 1945.