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• 1874 Synopsis of GTS Vol 1 Great Indus Series D of NW Quadrilateral by Walker s.pdf (46.0 MiB)
• 1874 Synopsis of GTS Vol 2 Great Arc Section 24 to 30 or Series A of NW Quadrilateral.pdf (8.0 MiB)
• 1874 Synopsis of GTS Vol 3 Karachi Longitudinal Series or Series B of NW Quadrilateral.pdf (4.3 MiB)
• 1875 Synopsis of GTS Vol 4 Gurhagarh Meridional Series or Series F of NW Quadrilateral.pdf (7.9 MiB)
• 1875 Synopsis of GTS Vol 5 Rahun Meridional Series or Series E of NW Quadrilateral.pdf (9.5 MiB)
• 1875 Synopsis of GTS Vol 6 Jogi-Tila Meridional Series or Series H of NE Quadrilateral.pdf (8.0 MiB)
• 1878 Synopsis of GTS Vol 8 Great Arc Section 18 to 24 of SE Quadrilateral s.pdf (7.8 MiB)
• 1878 Synopsis of GTS Vol 9 Jabalpur Meridional Series or Series E of SE Quadrilateral.pdf (3.8 MiB)
• 1879 Synopsis of GTS Vol 7 NW Himalaya Series and Kashmir Triangulation s.pdf (66.1 MiB)
• 1880 Synopsis of GTS Vol 10 Bider Longitudinal Series or Series D of SE Quadrilateral.pdf (6.1 MiB)
• 1880 Synopsis of GTS Vol 11 Bilaspur Meridional Series of SE Quadrilateral s.pdf (10.8 MiB)
• 1880 Synopsis of GTS Vol 12 Calcutta Longitaudinal Series or Series B of SE Quadrilateral.pdf (8.4 MiB)
• 1880 Synopsis of GTS Vol 13 East Coast Series or Series C of SE Quadrilateral.pdf (9.0 MiB)
• 1883 Synopsis of GTS Vol 14 The Budhon Meridional Series s.pdf (5.4 MiB)
• 1883 Synopsis of GTS Vol 15 Rangir Meridional Series or Series K of NE Quadrilateral.pdf (5.9 MiB)
• 1883 Synopsis of GTS Vol 16 Amua Meridional Series or Series M of NE Quadrilateral.pdf (6.5 MiB)
• 1883 Synopsis of GTS Vol 17 Gurwani Meridional Series or Series O of NE Quadrilateral.pdf (6.8 MiB)
• 1883 Synopsis of GTS Vol 18 Hurilaong Meridional Series or Series Q of NE Quadrilateral.pdf (6.9 MiB)
• 1883 Synopsis of GTS Vol 19 N Parasnath and N Maluncha Meridional Series of NE Quadrilateral s.pdf (7.3 MiB)
• 1883 Synopsis of GTS Vol 20 Calcutta Meridional Series or Series V of NE Quadrilateral.pdf (7.8 MiB)
• 1883 Synopsis of GTS Vol 21 Series U and W of NE Quadrilateral s.pdf (12.6 MiB)
• 1885 Synopsis of GTS Vol 13A S Parasnath and S Maluncha Meridional Series of SE Quadrilateral s.pdf (11.2 MiB)
• 1887 Synopsis of GTS Vol 7A Jodhpore and E Sind Meridional Series of NW Quadrilateral s.pdf (16.5 MiB)
• 1891 Synopsis of GTS Vol 22 Assam Valley Triangulation or Series X of NE Quadrilateral.pdf (7.8 MiB)
• 1891 Synopsis of GTS Vol 23 South Konkan Coast Series or Series C of Southern Trigon.pdf (3.2 MiB)
• 1891 Synopsis of GTS Vol 24 Mangalore Meridional Series or Series D of Southern Trigon.pdf (7.7 MiB)
• 1891 Synopsis of GTS Vol 25 South East Coast Series or Series F of Southern Trigon.pdf (8.4 MiB)
• 1892 Synopsis of GTS Vol 26 Bombay Longitudinal Series s.pdf (6.2 MiB)
• 1892 Synopsis of GTS Vol 27 Madras Longitudinal Series or Series G of Southern Trigon.pdf (9.0 MiB)
• 1892 Synopsis of GTS Vol 28 Madras Meridional and Coast Series or Series E of Southern Trigon.pdf (11.6 MiB)
• 1892 Synopsis of GTS Vol 30 Abu Meridional Series or Series K of SW Quadrilateral.pdf (6.2 MiB)
• 1893 Synopsis of GTS Vol 31 Khanpisura Meridional Series or Series G of SE Quadrilateral.pdf (4.5 MiB)
• 1893 Synopsis of GTS Vol 32 Singi Meridional Series or Series H of SW Quadrilateral.pdf (4.7 MiB)
• 1893 Synopsis of GTS vol 33 Cutch Coast Series of SW Quadrilateral s.pdf (9.2 MiB)
• 1894 Synopsis of GTS Vol 34 Kathiawar Meridional Series s.pdf (10.7 MiB)
• 1897 Synoptical Vol 33 Addendum s.pdf (2.9 MiB)
• 1899 Synopsis of GTS Vol 29 Great Arc Section 8 to 18 or Series A of Southern Trigon.pdf (19.8 MiB)
• 1909 Charts of the Synopsis of GTS Vol 35 North-East Quadrilateral.pdf (55.4 MiB)
• 1909 Synopsis of GTS Vol 35 North-East Quadrilateral s.pdf (27.3 MiB)