Citations
'Ordnance Survey : Training Pamphlet No.5', 1934-11 - 1939-06, GBR/3296/Maps/CCSA.IM_424_4, IM_424_4. Cambridge University Library. |
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'Ordnance Survey : Training Pamphlet No.5', 1934-11 - 1939-06, GBR/3296/Maps/CCSA.IM_424_4, IM_424_4. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239316 Accessed May 15, 2025. |