1. IOR/V/20/198 Reference (shelfmark): IOR/V/20/198 Title: Geological Survey of India Bulletins Series A: Economic Geology, 2. Limestone deposits of the Son Valley, Mirsapur District, U.P., and their suitability for cement and carbide. M. Nath. 1951 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1951 Extent: 1 volume