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Citations

Letter from Christian Siemers to the Board of Longitude, 1817-05-29, GBR/0180/RGO 14/38: 333-336. Cambridge University Library.

Letter from Christian Siemers to the Board of Longitude, 1817-05-29, GBR/0180/RGO 14/38: 333-336. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/160121 Accessed April 24, 2024.

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