Citations
'The Survey service, Royal Engineers', 1975, GBR/3296/Maps/CCSA.IM_538_7, IM_538_7. Cambridge University Library. |
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'The Survey service, Royal Engineers', 1975, GBR/3296/Maps/CCSA.IM_538_7, IM_538_7. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/240458 Accessed May 11, 2025. |