Citations
Notes for candidates for technical examination. Triangulation and levelling on the Ordnance Survey, 1954-10, GBR/3296/Maps/CCSA.OS_410_28, OS_410_28. Cambridge University Library. |
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Notes for candidates for technical examination. Triangulation and levelling on the Ordnance Survey, 1954-10, GBR/3296/Maps/CCSA.OS_410_28, OS_410_28. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/244904 Accessed April 24, 2025. |