Haas, Michael. <br/><br/>
International systems :  a behavioral approach / 
[by] Michael Haas ; foreword by Donald J. Puchala. 
 - New York :  Chandler,  [c1974]. 
 - xii, 433 p. 
<br/><br/><label>ISBN: </label>0810204487 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations--Research.