Standard international trade classification, revised. 

 - New York :   United Nations,   1961. 
 - 135 p. ;  28 cm. 
 - Statistical papers Series M No,   34 .
<br/><br/>67  67 
<br/><br/><label>Subjects--Topical Terms: </label><br/>KLASSIFIKATION
<br/><br/><label>Dewey Class. No.: </label>382 / U3s