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Citations

John McGhie's instrument for finding the longitude by the passing of the sun over the meridian, 1813, GBR/0180/RGO 14/38: 268-282. Cambridge University Library.

John McGhie's instrument for finding the longitude by the passing of the sun over the meridian, 1813, GBR/0180/RGO 14/38: 268-282. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110107 Accessed May 30, 2024.

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