Citations
Ordnance Survey primary triangulation of Great Britain diagrams, 1938 - 1940, GBR/3296/Maps/CCSA.IM_428_17, IM_428_17. Cambridge University Library. |
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Ordnance Survey primary triangulation of Great Britain diagrams, 1938 - 1940, GBR/3296/Maps/CCSA.IM_428_17, IM_428_17. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239423 Accessed November 14, 2024. |