Commodity trade statistics. 

 - New York  United Nations          1993 
 - 345p.  cm. 
 - Statistical papers series D, Vol.xlii, no.1-18 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:54.1N45.N92s, N2.42-(1-16)/UN