Citations
Sketches of the Time Signal Ball and northern support of the South East Equatorial, 1855 - 1857, GBR/0180/RGO 116/6/6. Cambridge University Library. |
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Sketches of the Time Signal Ball and northern support of the South East Equatorial, 1855 - 1857, GBR/0180/RGO 116/6/6. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/146917 Accessed November 16, 2024. |