U. N., Economic and Social Affairs- International, Deptt. of-. Commodity Trade Statistics, 1980 - <br/><br/>
United States of America, Puerto Rico.   

 - New York  United Nations  1982 
 - 365p. 
 - Statistical papers, series- D v. 30, no. 1- 17 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>382.40182  / Un58.US