Gray Richard B. <br/><br/>
International security  systems :  concepts and models of world order. 

 - ed. 
 - Illinos :  Peacock,  1969. 
 - 227  p. ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label> $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>international security.