United Nations, Economic and Social Affairs  <br/><br/>
Statistical yearbook  56th issue 2011 

 - New York  United Nations  2013 
 - xii, 682p. 
<br/><br/>  
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>SC:330(2)  / Un58.SY