Citations
Nautical Almanac, 1981, 1980, GBR/0180/RGO 180/24. Cambridge University Library. |
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Nautical Almanac, 1981, 1980, GBR/0180/RGO 180/24. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/107916 Accessed June 29, 2025. |