Exploring long cycles : / 
edited by George Modelski. 
 - Boulder :  L. Rienner Publishers ;  1987. 
 - x, 277 p. : 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0931477980 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations
<br/><br/><label>Dewey Class. No.: </label>327.072  / Ex