Citations
Correspondence on the Ordnance Survey, 1904 - 1938, GBR/0180/RGO 8/80. Cambridge University Library. |
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Correspondence on the Ordnance Survey, 1904 - 1938, GBR/0180/RGO 8/80. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/99423 Accessed April 21, 2025. |