Citations
Ordnance Survey Seventh Series one inch maps : publication and revision dates - coloured edition. List of printed sheets - no 7 amendment no 1, 1969-09, GBR/3296/Maps/CCSA.OS_129_23/30, OS_129_23/30. Cambridge University Library. |
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Ordnance Survey Seventh Series one inch maps : publication and revision dates - coloured edition. List of printed sheets - no 7 amendment no 1, 1969-09, GBR/3296/Maps/CCSA.OS_129_23/30, OS_129_23/30. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/242914 Accessed April 30, 2025. |