Citations
International Radio Time Signals from Royal Greenwich Observatory emitted by the Post Office at Rugby, 1925 - 1939, GBR/0180/RGO 43/50-55. Cambridge University Library. |
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International Radio Time Signals from Royal Greenwich Observatory emitted by the Post Office at Rugby, 1925 - 1939, GBR/0180/RGO 43/50-55. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/1969913 Accessed March 15, 2025. |