Citations
John Carey on the variation compass, 1825-05-28, GBR/0180/RGO 14/43: 513-516. Cambridge University Library. |
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John Carey on the variation compass, 1825-05-28, GBR/0180/RGO 14/43: 513-516. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110236 Accessed May 15, 2025. |