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Citations

Papers on time balls, signals and clocks, 1904 - 1927, GBR/0180/RGO 7/256. Cambridge University Library.

Papers on time balls, signals and clocks, 1904 - 1927, GBR/0180/RGO 7/256. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/99298 Accessed May 19, 2024.

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