Protocol amending the Agreements, Conventions and Protocols on Narcotic Drugs concluded at The Hague on 23rd January, 1912 at Geneva on 11th February, 1925, and 19th February, 1925, and 13th July, 1931 at Bangkok on 27th November, 1931, and at Geneva on 26th June, 1936

Treaty Series 035/1947: Cmd. 7135