Citations
William Cragg on the cause of the variation of the magnetic needle, 1825 - 1828, GBR/0180/RGO 14/43: 476a-484. Cambridge University Library. |
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William Cragg on the cause of the variation of the magnetic needle, 1825 - 1828, GBR/0180/RGO 14/43: 476a-484. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110231 Accessed May 04, 2024. |