Citations
Photographic Zenith Tube (PZT) Julian date against ū in graph format, 1964 - 1965, GBR/0180/RGO 43/219, Folder 1: RGO 43/219: Series GBR/0180/RGO 43. Cambridge University Library. |
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Photographic Zenith Tube (PZT) Julian date against ū in graph format, 1964 - 1965, GBR/0180/RGO 43/219, Folder 1: RGO 43/219: Series GBR/0180/RGO 43. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/2038430 Accessed May 08, 2025. |