Commodity trade statistics. 

 - New York  U.N.           1990 
 - 331p.  cm. 
 - Statistical papers series-D.  Vol.37, No.1-17 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N88s, N0.37/UN