Citations
Ordnance Survey technical paper no 20. The shape of the Earth, 1969-12, GBR/3296/Maps/CCSA.FJ_204_3/7/1, FJ_204_3/7/1. Cambridge University Library. |
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Ordnance Survey technical paper no 20. The shape of the Earth, 1969-12, GBR/3296/Maps/CCSA.FJ_204_3/7/1, FJ_204_3/7/1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/246131 Accessed November 14, 2024. |