1. IOR/V/27/421/7 Reference (shelfmark): IOR/V/27/421/7 Title: Burrard S G and Hayden, H H, A sketch of the geography and geology of the Himalaya mountains and Tibet. Revised by Sir Sidney Burrard and A M Heron. Part 4: The geology of the Himalaya. Delhi, 1934 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1934 Extent: 1 volume