Commodity trade statistics. 

 - New York  United Nations.          1987 
 - 415p.  cm. 
 - Statistical papers series-D.  Vol.36, No.1-9 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N86s, M6.36/UN