International opium convention, signed at The Hague, January 23rd, 1912.
Subtitle: Protocols of cloture signed at The Hague on January 23rd, 1912; July 9th, 1913; and June 25th, 1914.
Contributors: League of Nations
Publisher: League of Nations
Published: 1923
Place of publication: [Geneva
Language: eng
Number of pages: 29
Subjects: Opium trade
Notes: At head of title: O.C.1(1).  Genève, le 3 avril 1923.  League of Nations.

French and English.