Citations
Comparison of the time determinations of the Photographic Zenith Tube (PZT), at Herstmonceux and at Washington, USA, respectively, 1956 - 1960, GBR/0180/RGO 43/195, Box 20: RGO 43/187-200: Series GBR/0180/RGO 43. Cambridge University Library. |
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Comparison of the time determinations of the Photographic Zenith Tube (PZT), at Herstmonceux and at Washington, USA, respectively, 1956 - 1960, GBR/0180/RGO 43/195, Box 20: RGO 43/187-200: Series GBR/0180/RGO 43. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/2038334 Accessed May 19, 2025. |