Pettman, Ralph. <br/><br/>
Human behavior and world politics / 
Ralph Pettman. 
 - New York :  St. Martin's Press,  1975. 
 - viii, 342 p. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations--Research.
<br/><br/><label>LC Class. No.: </label>JX1291  / .P475 1975b