United Nations. Department of Economic and Social Affairs <br/><br/>
National practices in compilation and dissemination of external trade index number  A technocal report / 

 - New York  UESA ,  2005. 
 - Statistical papaer series f no. 86 .
<br/><br/><label>ISBN: </label>9789211614732 
<br/><br/><label>Dewey Class. No.: </label>330.015195 NAT.P5