Citations
Ordnance Survey policy statement no 38. Revision points and air points, 1951-09, GBR/3296/Maps/CCSA.OS_189_1/38, OS_189_1/38. Cambridge University Library. |
|
Ordnance Survey policy statement no 38. Revision points and air points, 1951-09, GBR/3296/Maps/CCSA.OS_189_1/38, OS_189_1/38. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243597 Accessed November 18, 2024. |