41. IOR/V/20/42 Reference (shelfmark): IOR/V/20/42 Title: Memoirs of the Geological Survey of India, Vols 41-42 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1913-1917 Extent: 1 volume
42. IOR/V/20/43 Reference (shelfmark): IOR/V/20/43 Title: Memoirs of the Geological Survey of India, Vols 43-44 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1913-1923 Extent: 1 volume
43. IOR/V/20/44 Reference (shelfmark): IOR/V/20/44 Title: Memoirs of the Geological Survey of India, Vols 45-46 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1917-1926 Extent: 1 volume
44. IOR/V/20/45 Reference (shelfmark): IOR/V/20/45 Title: Memoirs of the Geological Survey of India, Vols 47-48 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1925 Extent: 1 volume
45. IOR/V/20/46 Reference (shelfmark): IOR/V/20/46 Title: Memoirs of the Geological Survey of India, Vols 49-50 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1923-1928 Extent: 1 volume
46. 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
47. 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
48. 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
49. 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
50. 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