Citations
Ducom's artificial horizon and transit instrument, 1824, GBR/0180/RGO 14/44: 105-111. Cambridge University Library. |
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Ducom's artificial horizon and transit instrument, 1824, GBR/0180/RGO 14/44: 105-111. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110261 Accessed November 28, 2024. |