Technical report 1952 part III - geodetic work
Technical report 1952 part III - geodetic work
- Dehradun Surveyor General of India 1953
- 90p. maps, photos
GravityGsiLevellingObservatoriesTidesTriangulation
528.3 / TEC
GravityGsiLevellingObservatoriesTidesTriangulation
528.3 / TEC