Protocol on narcotic drugs : Protocol amending the Agreements, Conventions and Protocols on narcotic drugs concluded at The Hague on Jan. 23, 1912 ; at Geneva on Feb. 11, 1925 and Feb. 19, 1925 and July 13,1931 ; at Bangkok on Nov. 27, 1931 and at Geneva on June_ 26, 1936.
United Nations,issuing body.
Great Britain.His Majesty's Stationery Office.