Citations
'Monochrome to polychrome at the Ordnance Survey in the 19th Century', 1991-05, GBR/3296/Maps/CCSA.IM_422_1, IM_422_1. Cambridge University Library. |
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'Monochrome to polychrome at the Ordnance Survey in the 19th Century', 1991-05, GBR/3296/Maps/CCSA.IM_422_1, IM_422_1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239301 Accessed May 15, 2025. |