Citations
Notes on the minor trigonometrical work of the Ordnance Survey compiled under the direction of Colonel C F Close, C.M.G. Director-General of the Ordnance Survey, 1913 - 1933, GBR/3296/Maps/CCSA.OS_143_17, OS_143_17. Cambridge University Library. |
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Notes on the minor trigonometrical work of the Ordnance Survey compiled under the direction of Colonel C F Close, C.M.G. Director-General of the Ordnance Survey, 1913 - 1933, GBR/3296/Maps/CCSA.OS_143_17, OS_143_17. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/243091 Accessed April 29, 2025. |