51. IOR/V/20/47 Reference (shelfmark): IOR/V/20/47 Title: Memoirs of the Geological Survey of India, Vols 51-52 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1926-1929 Extent: 1 volume
52. IOR/V/20/49 Reference (shelfmark): IOR/V/20/49 Title: Memoirs of the Geological Survey of India, Vol 55 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1930-1933 Extent: 1 volume
53. IOR/V/20/50 Reference (shelfmark): IOR/V/20/50 Title: Memoirs of the Geological Survey of India, Vols 56-58 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1930-1931 Extent: 1 volume
54. IOR/V/20/51 Reference (shelfmark): IOR/V/20/51 Title: Memoirs of the Geological Survey of India, Vol 59-62 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1933-1934 Extent: 1 volume
55. IOR/V/20/52 Reference (shelfmark): IOR/V/20/52 Title: Memoirs of the Geological Survey of India, Vols 63-65 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1933-1940 Extent: 1 volume
56. IOR/V/20/53 Reference (shelfmark): IOR/V/20/53 Title: Memoirs of the Geological Survey of India, Vol 66 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1935-1936 Extent: 1 volume
57. IOR/V/20/61 Reference (shelfmark): IOR/V/20/61 Title: Memoirs of the Geological Survey of India, Vol 71 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1937 Extent: 1 volume
58. IOR/V/20/64 Reference (shelfmark): IOR/V/20/64 Title: Memoirs of the Geological Survey of India, Vol 73 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1939 Extent: 1 volume
59. IOR/V/20/67 Reference (shelfmark): IOR/V/20/67 Title: Memoirs of the Geological Survey of India, Vol 75 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1940 Extent: 1 volume
60. IOR/V/20/71 Reference (shelfmark): IOR/V/20/71 Title: Memoirs of the Geological Survey of India, Vol 77 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1947 Extent: 1 volume