Citations
Field astronomy. Observing procedure, 1963, GBR/3296/Maps/CCSA.FJ_203_5/6, FJ_203_5/6. Cambridge University Library. |
|
Field astronomy. Observing procedure, 1963, GBR/3296/Maps/CCSA.FJ_203_5/6, FJ_203_5/6. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/238818 Accessed September 23, 2024. |