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- 1870 Vol 1 Standards of Measure and Base-Lines & Early Operations by Walker s.pdf (28.9 MiB)
- 1873 Vol 3 Principal Triangulation of North-West Quadrilateral by Walker s.pdf (39.3 MiB)
- 1876 Vol 4 Principal Triangulation of North-West Quadrilateral by Walker s.pdf (40.2 MiB)
- 1879 Vol 2 History and Description of Principal Triangulation and its Reduction by Walker s.pdf (42.6 MiB)
- 1879 Vol 5 Details of Pendulum Operations by Basevi s.pdf (54.2 MiB)
- 1880 Vol 6 Principal Triangulation of SE Quadrilateral by Walker s.pdf (57.8 MiB)
- 1882 Vol 7 Principal Triangulation of NE Quadrilateral by Walker s.pdf (49.1 MiB)
- 1882 Vol 8 Principal Triangulation of NE Quadrilateral by Walker s.pdf (48.6 MiB)
- 1883 Vol 9 Electro-Telegraphic Longitude Operations 1875-81 by Campbell s.pdf (30.4 MiB)
- 1886 Vol 4A Principal Triangulation of Jodhpore and Eastern Sind of NW Quadrilateral by Haig s.pdf (16.6 MiB)
- 1887 Vol 10 Electro-Telegraphic Longitude Operations 1881-84 by Strahan s.pdf (32.8 MiB)
- 1890 Vol 11 Astronomical Observations for Latitude 1805-1885 s.pdf (44.0 MiB)
- 1890 Vol 12 Principal Triangulation of Southern Trigon by Strahan s.pdf (37.8 MiB)
- 1890 Vol 13 Principal Triangulation of Southern Trigon by Strahan s.pdf (37.0 MiB)
- 1890 Vol 14 Principal Triangulation of SW Quadrilateral by Cole s.pdf (35.5 MiB)
- 1893 Vol 15 Electro-Telegraphic Longitude Operations 1885-92 and final results by Strahan s.pdf (28.5 MiB)
- 1901 Vol 16 Tidal Observations 1873 to 1892 s.pdf (39.1 MiB)
- 1901 Vol 17 Electro-Telegraphic Operations from Karachi to Greenwich by Burrard s.pdf (21.0 MiB)
- 1906 Vol 18 Astronomical Observations for Latitude and Deflections of Plumb-line by Burrard s.pdf (29.5 MiB)
- 1910 Vol 19 Precision Leveling 1858-1909 by Burrard s.pdf (24.1 MiB)
- 1910 Vol 19A Southern Lines of Levelling by Burrard.pdf (26.3 MiB)
- 1910 Vol 19B Northern Lines of Levelling by Burrard s.pdf (19.7 MiB)