1. IOR/L/PS/11/232, P 1635/1923 Reference (shelfmark): IOR/L/PS/11/232, P 1635/1923 Title: P 1635/1923 Issue of King's Regulations for control of export of opium in British ships from Persian ports Collection Area: India Office Records and Private Papers Languages: English Date Range: 7 Apr 1923-12 Jan 1925 Extent: 1 file