General Report on the Observations of the Great Trigonometrical Survey of India during 1870-1871
Dehra Dun: Superintendent of the G T Survey, 1871. First Edition. Orig Printed Wrappers. Prepared for submission to the government of India. 25 pp, ill, lengthy appendix on extracts from the narrative reports on the executive offers in charge of the survey parties and operations. Numerous fold out maps accompany..... More