Professional paper
Survey of India
, 1912
by G. Bomford
Geodetic Branch Office, Survey of India 1928 Professional paper / Survey of India no. 22
Available at 1 libraries
by J. De Graaff Hunter
Office of the Trigonometrical Survey 1918 Professional paper / Survey of India 16
by S. G. Burrard
Printed at the Photo.-Litho. Office, Survey of India 1912 Professional paper / Survey of India no.12
Available at 2 libraries