The international system, theoretical essays /  
Edited by Klaus Knorr & Sidney Verba 
 - Princeton, N.J. :  Princeton University Press ,  1961 
 - 237 p.;  illus.  25 cm. 
<br/><br/> A revision of papers "first presented at a Symposium on International Relations Theory  ... sponsored by the Center of International Studies and held in Princeton in September 1960."  "Published simultaneously in World politics, volume xiv, number I." 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations.<br/>International organization.
<br/><br/><label>Dewey Class. No.: </label>320.1  / KNO