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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.

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 December 27, 2024.

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