Citations
Ordnance Survey surveyors instructions. sundry superseded pages and amendments, 1986 - 1991, GBR/3296/Maps/CCSA.OS_154_3, OS_154_3. Cambridge University Library. |
|
Ordnance Survey surveyors instructions. sundry superseded pages and amendments, 1986 - 1991, GBR/3296/Maps/CCSA.OS_154_3, OS_154_3. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243361 Accessed April 30, 2025. |