Citations
Memorials and letters from John Churchman regarding his principles of magnetic variation, 1789 - 1802, GBR/0180/RGO 14/11: 96-106. Cambridge University Library. |
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Memorials and letters from John Churchman regarding his principles of magnetic variation, 1789 - 1802, GBR/0180/RGO 14/11: 96-106. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/109501 Accessed September 19, 2024. |