1. IOR/L/E/9/750 Reference (shelfmark): IOR/L/E/9/750 Title: Collection 117/9 Opium and Drugs: Reports and statistics - Permanent Central Opium Board: Government of India annual statistics up to and including 1933 Collection Area: India Office Records and Private Papers Languages: English Date Range: Nov 1929-Sep 1934 Extent: 1 file