Citations
William Graham on the cause of annual variation in magnetic variation and two methods of determining longitude, 1787 - 1788, GBR/0180/RGO 14/42: 33-54. Cambridge University Library. |
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William Graham on the cause of annual variation in magnetic variation and two methods of determining longitude, 1787 - 1788, GBR/0180/RGO 14/42: 33-54. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110195 Accessed November 26, 2024. |