Citations
Sheet numbering of Ordnance Survey large scale maps. Leaflet no 28, 1973-01, GBR/3296/Maps/CCSA.OS_150_14/28, OS_150_14/28. Cambridge University Library. |
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Sheet numbering of Ordnance Survey large scale maps. Leaflet no 28, 1973-01, GBR/3296/Maps/CCSA.OS_150_14/28, OS_150_14/28. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243259 Accessed April 29, 2025. |