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Citations

David Thomas's description of an arrangement of the magnetic needle as a compass for ascertaining the dip, 1819 - 1821, GBR/0180/RGO 14/43: 579-581. Cambridge University Library.

David Thomas's description of an arrangement of the magnetic needle as a compass for ascertaining the dip, 1819 - 1821, GBR/0180/RGO 14/43: 579-581. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110244 Accessed October 13, 2024.

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