United Nations. Economic and Social Affairs, Department of-. <br/><br/>
Standard international trade classification   

 - Rev. 
 - New York  United Nations  1961 
 - viii, 135p. Appendix 
 - Statistical papers   series M- no. 34 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>382.40182  / Un58.SI