Commodity trade statistics. 

 - New York  United Nations          1987 
 - 280p.  cm. 
<br/><br/> Statistical paper series D, vol. xxxiii. no. 1-23. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N87s, M7/UN