Commodity trade statistics, 1990. 

 - New York  United Nations          1990 
 - 387p.  cm. 
<br/><br/> Statistical paper series D, vol. xl,  no. 1-31. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N95s, N5/UN