1. IOR/X/12155
- Reference (shelfmark):
- IOR/X/12155
- Title:
- Survey of India, Levelling of Secondary Precision, Heights of Bench-Marks
- Scope & Content:
- 72 pamphlets from a series of 76 (40, 65, 67, and 68 not held), giving tables of descriptions and the heights of bench-marks on secondary lines. Each pamphlet refers to the 1/4" (1:253,440) map sheet or sheets where the secondary lines are situated. Published by order of the Surveyor General of ...
- Collection Area:
- Map Collections
- Languages:
- English
- Date Range:
- 1927-1952
- Extent:
- 72 pamphlets