Citations
Original observations with Troughton's mural circle, 1819, GBR/0180/RGO 5/70. Cambridge University Library. |
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Original observations with Troughton's mural circle, 1819, GBR/0180/RGO 5/70. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/98014 Accessed April 04, 2025. |