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Author/Creator
- League of Nations[remove]45
- Opium Conference (2nd : 1924 Nov. 17-1925 Feb. 19 : Geneva, Switzerland)8
- League of Nations. Advisory Committee on Traffic in Opium and Other Dangerous Drugs6
- Conference for the Suppression of the Illicit Traffic in Dangerous Drugs (1936 : Geneva)4
- Conference on the Limitation of the Manufacture of Narcotic Drugs (1931 : Geneva)2
- Delano, Frederic Adrian, 1863-19532
- Foreign Policy Association2
- League of Nations. Permanent Central Opium Board2
- MacCallum, Elizabeth Pauline2
- Opium Conference (1st : Nov. 3, 1924-Feb. 11, 1925 : Geneva, Switzerland)2
- Atzenwiler, L. F.1
- Comference on the Suppression of Opium-Smoking (1931 Nov. 9-27 : Bangkok)1
- Conference for the Reduction and Limitation of Armaments (1932-1934 : Geneva, Switzerland)1
- Conference on the Limitation of the Manufacture of Narcotic Drugs (1931 : Geneva, Switzerland)1
- Conference on the limitation of the manufacture of narcotic drugs (1934 : Geneva)1
- Conference on the limitation of the manufacture of narcotic drugs, (1931 : Geneva)1
- Convention on the Limitation of the Manufacture of Narcotic Drugs (1931 : Geneva)1
- Great Britain1
- International Opium Conference (1911-1912 : The Hague)1
- International Opium Conference (1913 : The Hague)1