31. IOR/V/27/625/23 Reference (shelfmark): IOR/V/27/625/23 Title: Bengal. Board of Revenue, The opium manual. Vol 2: District procedure (rules)... Bihar. Calcutta, 1907 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907 Extent: 1 volume
32. IOR/V/27/625/24 Reference (shelfmark): IOR/V/27/625/24 Title: Bengal. Board of Revenue, The opium manual. Vol 3: District procedure (forms)... Bihar. Calcutta, 1907 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1907 Extent: 1 volume
33. IOR/V/27/625/25 Reference (shelfmark): IOR/V/27/625/25 Title: Bengal. Board of Revenue, The opium manual. Vol 4: Factory procedure (rules)... Patna. Calcutta, 1905 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1905 Extent: 1 volume
34. IOR/V/27/625/26 Reference (shelfmark): IOR/V/27/625/26 Title: Bengal. Board of Revenue, The opium manual. Vol 5: Factory procedure (forms)... Patna. Calcutta, 1905 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1905 Extent: 1 volume
35. IOR/V/27/625/28 Reference (shelfmark): IOR/V/27/625/28 Title: Bengal. Board of Revenue, The opium manual. Vol 7: District procedure (rules)... Benares. Calcutta, 1906 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1906 Extent: 1 volume
36. IOR/V/27/625/29 Reference (shelfmark): IOR/V/27/625/29 Title: Bengal. Board of Revenue, The opium manual. Vol 8: District procedure (forms)... Benares. Calcutta, 1906 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1906 Extent: 1 volume
37. IOR/V/27/625/30 Reference (shelfmark): IOR/V/27/625/30 Title: Bengal. Board of Revenue, The opium manual. Vol 9: Factory procedure (rules)... Ghazipur. Calcutta, 1906 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1906 Extent: 1 volume
38. IOR/V/27/625/9 Reference (shelfmark): IOR/V/27/625/9 Title: Watt, Sir George, Papaver somniferum - Opium (an extract from the Dictionary of Economic Products of India). 1891 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1891 Extent: 1 volume
39. IOR/V/27/625/6A Reference (shelfmark): IOR/V/27/625/6A Title: Kerr, Hem Chunder, Report on the cultivation of, and trade in, ganja in Bengal. Calcutta, 1877 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1877 Extent: 1 volume
40. IOR/V/27/625/8 Reference (shelfmark): IOR/V/27/625/8 Title: India. Papers relating to the opium question. Calcutta, 1870; India. Papers relating to the opium question. Supplement. Calcutta, 1872 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1870-1872 Extent: 1 volume