World encyclopedia of political system. vol. I 
<label>;</label> Delury, George E. 
 - Harlow  Longman  1983 
 - 28 cm.  xviii, 707p. 
<br/><br/><label>ISBN: </label>0582902584 
<br/><br/><label>Dewey Class. No.: </label>320.03  / WOR