Citations
Royal Observatory Bulletins, 1961 - 1971, GBR/0180/RGO 19/2/1. Cambridge University Library. |
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Royal Observatory Bulletins, 1961 - 1971, GBR/0180/RGO 19/2/1. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/111686 Accessed September 08, 2024. |