Citations
Ordnance Survey information : leaflet no 33. Levelling, 1988-11, GBR/3296/Maps/CCSA.OS_143_18/15, OS_143_18/15. Cambridge University Library. |
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Ordnance Survey information : leaflet no 33. Levelling, 1988-11, GBR/3296/Maps/CCSA.OS_143_18/15, OS_143_18/15. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243106 Accessed April 29, 2025. |