Commodity trade statistics. 

 - New York  U.N.           1992 
 - 354p.  cm. 
 - Statistical papers series-D.  Vol.37, No.1-21 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N87s, N2.37/UN