Commodity ttrade statistics. 

 - New York  United Nations          1983 
 - 317p.  cm. 
 -  Vol. 32, no. 1-12 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N83s, M3/UN