Standard international trade classification.    revision 3 

 - New York :    United Nations,    1986 
 - xvii, 106 p. ;    29 cm. 
 - Statistical papers ;    ser. M, no.34/Rev.3 .
<br/><br/><label>ISBN: </label>9211612659 
<br/><br/><label>Subjects--Topical Terms: </label><br/> International trade