Citations
Table for determining latitude, longitude, convergence & magnetic variation from grid references in Great Britain, 1910-07, GBR/3296/Maps/CCSA.DA_611_18, DA_611_18. Cambridge University Library. |
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Table for determining latitude, longitude, convergence & magnetic variation from grid references in Great Britain, 1910-07, GBR/3296/Maps/CCSA.DA_611_18, DA_611_18. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/236521 Accessed September 21, 2024. |