Citations
Helwan and Kottamia Observatories, Egypt: Papers, 1965, 1976-1977, GBR/0180/RGO 135/2. Cambridge University Library. |
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Helwan and Kottamia Observatories, Egypt: Papers, 1965, 1976-1977, GBR/0180/RGO 135/2. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/1490646 Accessed January 05, 2025. |