%0 Book Section %A United Nations Office of Legal Affairs %T No. 84. Agreement Concerning the Administration of the Postal, Telegraphic and Telephone Services in the Principality of Liechtenstein by the Swiss Postal Administration and the Swiss Telegraphic and Telephone Administration, Signed at Berne, November 10, 1920 %B Treaty Series 1666 %D 1999 %I United Nations %R doi:https://doi.org/10.18356/b11f809b-en-fr %U https://www.un-ilibrary.org/content/books/9789210595858s004-c001