1. IOR/V/19/17 Reference (shelfmark): IOR/V/19/17 Title: Account of the Operations of the Great Trigonometrical Survey of India, Vol 16, Details of the tidal observations taken during the period from 1873 to 1892 and a description of the methods of reduction by J. Eccles. S.G. Burrard. Dehra Dun, 1901 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1901 Extent: 1 volume