Citations
Ordnance Survey 1/1250 and 1/2500 scales instructions to draughtsmen, examiners and area advisers, 1947, advanced edition, 1947 - 1950, GBR/3296/Maps/CCSA.IM_397_1, IM_397_1. Cambridge University Library. |
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Ordnance Survey 1/1250 and 1/2500 scales instructions to draughtsmen, examiners and area advisers, 1947, advanced edition, 1947 - 1950, GBR/3296/Maps/CCSA.IM_397_1, IM_397_1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239035 Accessed September 23, 2024. |