11. IOR/V/20/204 Reference (shelfmark): IOR/V/20/204 Title: Geological Survey of India Bulletins Series A: Economic Geology, 8. Iron ore deposits of parts of Salem and Trichinopoly Districts. M.S. Krishnan & N.K.N. Aiyengar. 1954 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1954 Extent: 1 volume
12. IOR/V/20/206 Reference (shelfmark): IOR/V/20/206 Title: Geological Survey of India Bulletins Series A: Economic Geology, 10. Economic geology and mineral resources of Madhya Bharat. M.K. Roy Chowdhury. 1955 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1955 Extent: 1 volume