The customs areas of the world. 

 - New York,  1959. 
 - United Nations. Statistical Office. Statistical papers ;  ser. M, no. 30 .
 - Document (United Nations) ;  ST/STAT/ser.M/30. Statistical papers. Series M. ;  Statistical papers. Series M. ;  ser. M, no. 30 .
<br/><br/> United Nations. [Document] ST/STAT/ser.M/30.  "United Nations publication. Sales no.: 59.XVII.5." 
<br/><br/><label>LCCN: </label>60000452 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Customs administration.