Citations
'Ordnance Survey open days, 18th & 19th July 1969', 1969-07, GBR/3296/Maps/CCSA.IM_418_1, IM_418_1. Cambridge University Library. |
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'Ordnance Survey open days, 18th & 19th July 1969', 1969-07, GBR/3296/Maps/CCSA.IM_418_1, IM_418_1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/239269 Accessed May 15, 2025. |