1. IOR/V/19/213 Reference (shelfmark): IOR/V/19/213 Title: Survey of India Professional Paper No. 6, Account of a determination of the co-efficients of expansion of the wires of the J äderin base-line apparatus. G.P. Lenox Conyngham. Dehra Dun, 1902 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1902 Extent: 1 volume