RT Book, Section SR Electronic(1) A1 United Nations Office of Legal Affairs YR 1999 T1 No. 29109. Universal Postal Union T2 Treaty Series 1687 PB United Nations SN 9789210596060 DO 10.18356/b4a3b55c-en-fr UL https://www.un-ilibrary.org/content/books/9789210596060s003-c001