Citations
Letter from James Callenden on a stand for a telescope to be used at sea, 1820-07-10, GBR/0180/RGO 14/30: 498-500. Cambridge University Library. |
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Letter from James Callenden on a stand for a telescope to be used at sea, 1820-07-10, GBR/0180/RGO 14/30: 498-500. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/109915 Accessed January 08, 2025. |