1. IOR/V/25/600/115 Reference (shelfmark): IOR/V/25/600/115 Title: Bengal Industries Department Bulletin, No 62 Theory of detergency and the development of maximum cleansing power in washing soap. R L Datta & S S Das Gupta. 1934 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1934 Extent: 1 volume