Citations
Records of the magnetic theodolite, 1838 - 1841, GBR/0180/RGO 6/647. Cambridge University Library. |
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Records of the magnetic theodolite, 1838 - 1841, GBR/0180/RGO 6/647. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/98839 Accessed October 18, 2024. |