world Development indicators. 

 - 6th ed. 
 - Washington :  The World Bank Group,  2002. 
 - xxvii, 405 p.  ill.  28 cm. 
<br/><br/>includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0821350881 
<br/><br/><label>Dewey Class. No.: </label>338.9