Citations
Correspondence on Dutch observatories, 1936 - 1953, GBR/0180/RGO 9/456. Cambridge University Library. |
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Correspondence on Dutch observatories, 1936 - 1953, GBR/0180/RGO 9/456. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/99971 Accessed March 11, 2025. |