Citations
Envelope entitled British Grids, GBR/3296/Maps/CCSA.IM_L149_6, IM_L149_6. Cambridge University Library. |
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Envelope entitled British Grids, GBR/3296/Maps/CCSA.IM_L149_6, IM_L149_6. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/246393 Accessed May 13, 2025. |