Citations
Magnetic compass and polarity, 1944-08-13 - 1979, GBR/1928/NRI/SCC2/94/4. Needham Research Institute. |
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Magnetic compass and polarity, 1944-08-13 - 1979, GBR/1928/NRI/SCC2/94/4. Needham Research Institute. https://archivesearch.lib.cam.ac.uk/repositories/21/archival_objects/334216 Accessed November 12, 2024. |