Hudson, Michael C Taylor, Charles Lewis <br/><br/>
World Handbook of political and social indicators 

 - 2nd 
 - London  Yale  1972 
 - xiv; 443 
<br/><br/><label>ISBN: </label>300015550 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Political Protests<br/>Political Structure<br/>Social Patterns