Commodity trade statistics 1991. 

 - New York  United Nations.          1992 
 - 307p.  cm. 
 - Statistical papers series-D.  V.41,No.1-5 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N91s, N1.41/UN