DIN CEN/TS 15523
DIN CEN/TS 15523 Postal service - Statement of mailing submission; English version CEN/TS 15523:2006
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2007
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2007