21. IOR/V/25/720/20 Reference (shelfmark): IOR/V/25/720/20 Title: Railway Board Technical Papers, No 329 Foundations in shrinkable soils. K J Vogl. 1954 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1954 Extent: 1 volume
22. IOR/V/25/720/21-22 Reference (shelfmark): IOR/V/25/720/21-22 Title: Railway Board Technical Papers, No 330 Statistical aids to railway operation. J Singh. 1957 Scope & Content: [2 printings] Collection Area: India Office Records and Private Papers Languages: English Date Range: 1957 Extent: 1 volume
23. IOR/V/25/720/23 Reference (shelfmark): IOR/V/25/720/23 Title: Railway Board Technical Papers, No 331 Mukerian-Pathankot construction. G P Shahani. 1955 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1955 Extent: 1 volume
24. IOR/V/25/720/24 Reference (shelfmark): IOR/V/25/720/24 Title: Railway Board Technical Papers, No 332 Value of phenolic resins in railways and the unique properties of their Indian substitutes. S Ranamujam. 1956 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1956 Extent: 1 volume
25. IOR/V/25/720/25 Reference (shelfmark): IOR/V/25/720/25 Title: Railway Board Technical Papers, No 333 Construction of a (14'x150' spans) B.G.M.L. bridge and its training works across the Beas at Mirthal on the new Mukerian-Pathankot link. G P Shahani. 1957 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1957 Extent: 1 volume
26. IOR/V/25/720/27 Reference (shelfmark): IOR/V/25/720/27 Title: Railway Conference Proceedings, 1871 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1871 Extent: 1 volume
27. IOR/V/25/720/28 Reference (shelfmark): IOR/V/25/720/28 Title: Railway Conference Proceedings, 1888 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1888 Extent: 1 volume
28. IOR/V/25/720/29 Reference (shelfmark): IOR/V/25/720/29 Title: Railway Conference Proceedings, 1893 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1893 Extent: 1 volume
29. IOR/V/25/720/30 Reference (shelfmark): IOR/V/25/720/30 Title: Railway Conference Proceedings, 1899 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1899 Extent: 1 volume
30. IOR/V/25/720/31 Reference (shelfmark): IOR/V/25/720/31 Title: Railway Conference Proceedings, 1900 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1900 Extent: 1 volume