Citations
Ordnance Survey technical paper no 19. The changing tasks and methods of the surveyor, 1969-09, GBR/3296/Maps/CCSA.OS_155_2/4, OS_155_2/4. Cambridge University Library. |
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Ordnance Survey technical paper no 19. The changing tasks and methods of the surveyor, 1969-09, GBR/3296/Maps/CCSA.OS_155_2/4, OS_155_2/4. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243368 Accessed April 30, 2025. |