1. IOR/L/E/9/721 Reference (shelfmark): IOR/L/E/9/721 Title: Collection 113/9 Opium and Drugs: Conferences and Conventions - Drug Limitation Convention 1931: application of Article 10 to diacetylmorphine (heroin) Collection Area: India Office Records and Private Papers Languages: English Date Range: May 1934-Apr 1940 Extent: 1 file