TY  - BOOK
AU  - Walker, J.T.
ED  - Great Trigonometrical Survey of India
TI  - Account of the operations of the Great Trigonometrical Survey of India. Volume 1. The standards of measure and the base-lines, also an introductory account of the early operations of the survey during the period 1800-1830
PY  - 1870///
CY  - Dehra Doon
PB  - Office of the Great Trigonometrical Surv
KW  - SURVEY OF INDIA
N2  - Presented by the Secretary of State for India
ER  -