RT Book, Section SR Electronic(1) A1 United Nations Office of Legal Affairs YR 1997 T1 No. 1037. United Nations (United Nations Development Programme) and Universal Postal Union T2 Treaty Series 1569 PB United Nations SN 9789210594905 DO 10.18356/fa0daa2c-en-fr UL https://www.un-ilibrary.org/content/books/9789210594905s003-c002