81. IOR/V/20/156 Reference (shelfmark): IOR/V/20/156 Title: Records of the Geological Survey of India, Vols 39-40 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1910 Extent: 1 volume
82. IOR/V/20/157 Reference (shelfmark): IOR/V/20/157 Title: Records of the Geological Survey of India, Vols 41-42 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1911-1912 Extent: 1 volume
83. IOR/V/20/158 Reference (shelfmark): IOR/V/20/158 Title: Records of the Geological Survey of India, Vols 43-44 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1913-1914 Extent: 1 volume
84. IOR/V/20/159 Reference (shelfmark): IOR/V/20/159 Title: Records of the Geological Survey of India, Vols 45-46 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1915 Extent: 1 volume
85. IOR/V/20/160 Reference (shelfmark): IOR/V/20/160 Title: Records of the Geological Survey of India, Vols 47-48 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1916-1917 Extent: 1 volume
86. IOR/V/20/161 Reference (shelfmark): IOR/V/20/161 Title: Records of the Geological Survey of India, Vols 49-50 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1918-1919 Extent: 1 volume
87. IOR/V/20/162 Reference (shelfmark): IOR/V/20/162 Title: Records of the Geological Survey of India, Vols 51-52 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1921 Extent: 1 volume
88. IOR/V/20/163 Reference (shelfmark): IOR/V/20/163 Title: Records of the Geological Survey of India, Vol 53 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1921-1922 Extent: 1 volume
89. IOR/V/20/164 Reference (shelfmark): IOR/V/20/164 Title: Records of the Geological Survey of India, Vol 54 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1922 Extent: 1 volume
90. IOR/V/20/165 Reference (shelfmark): IOR/V/20/165 Title: Records of the Geological Survey of India, Vol 55 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1923-1924 Extent: 1 volume