Citations
Correspondence on time balls and signals, 1858 - 1860, GBR/0180/RGO 6/614. Cambridge University Library. |
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Correspondence on time balls and signals, 1858 - 1860, GBR/0180/RGO 6/614. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/98806 Accessed April 18, 2024. |