Citations
Hansen's lunar tables, 1856, GBR/0180/RGO 6/89. Cambridge University Library. |
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Hansen's lunar tables, 1856, GBR/0180/RGO 6/89. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/98279 Accessed September 30, 2023. |