1. IOR/L/E/9/997 Reference (shelfmark): IOR/L/E/9/997 Title: Collection 152/4 Tariff Board Enquiries - Protection of magnesium chloride industry and Heavy Chemical Industry (Protection) Act of 1931 Collection Area: India Office Records and Private Papers Languages: English Date Range: Jun 1925-Aug 1931 Extent: 1 file