Citations
'Greenwich Astronomical Observations, 1847, Altitude and Altazimuth Instrument': drawings and prints, 1847, GBR/0180/RGO 101/2/9/10-28. Cambridge University Library. |
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'Greenwich Astronomical Observations, 1847, Altitude and Altazimuth Instrument': drawings and prints, 1847, GBR/0180/RGO 101/2/9/10-28. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/1562719 Accessed March 16, 2025. |