Rummel, R. J.  1932- <br/><br/>
Field theory evolving / 
R. J. Rummel 
 - Beverly Hills :  SAGE Publications,  1977 
 - 531 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/>Bibliography :  p. 499-521 
<br/><br/><label>ISBN: </label>080390391X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations--Research