1. IOR/L/E/9/722 Reference (shelfmark): IOR/L/E/9/722 Title: Collection 113/10 Opium and Drugs: Conferences and Conventions - Drug Limitation Convention 1931: application to codeine (methylmorphine) and dionine (ethylmorphine) Collection Area: India Office Records and Private Papers Languages: English Date Range: Nov 1934-Jul 1941 Extent: 1 file