Citations
Ordnance Survey : a brief description of the National Grid and reference system, 1946 - 1949, GBR/3296/Maps/CCSA.OS_152_8, OS_152_8. Cambridge University Library. |
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Ordnance Survey : a brief description of the National Grid and reference system, 1946 - 1949, GBR/3296/Maps/CCSA.OS_152_8, OS_152_8. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243297 Accessed April 29, 2025. |