Roskin, Michael. <br/><br/>
IR :  an introduction to international relations / 
by Michael Roskin, Nicholas Berry. 
 - Instructor's edition. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1990. 
 - IE xiv, 516 p. :  ill. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>013505611X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>International relations.<br/>Government and political science--International relations.<br/>World politics.<br/>International cooperation.