Citations
Paper on Bubble-Sextant observations, 1940-12, GBR/0180/RGO 16/81. Cambridge University Library. |
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Paper on Bubble-Sextant observations, 1940-12, GBR/0180/RGO 16/81. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/101688 Accessed May 15, 2025. |