Citations
Ordnance Survey surveyors instructions. sundry superseded pages and amendments, 1979 - 1990, GBR/3296/Maps/CCSA.OS_154_4, OS_154_4. Cambridge University Library. |
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Ordnance Survey surveyors instructions. sundry superseded pages and amendments, 1979 - 1990, GBR/3296/Maps/CCSA.OS_154_4, OS_154_4. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243362 Accessed November 18, 2024. |