Citations
Royal Greenwich Observatory Clocks and Chronometers, 1872 - 1948, GBR/0180/RGO 43/60-64. Cambridge University Library. |
|
Royal Greenwich Observatory Clocks and Chronometers, 1872 - 1948, GBR/0180/RGO 43/60-64. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/1969961 Accessed March 15, 2025. |