Citations
Admiralty note relating to Christopher Hansteen's variation chart, 1827-04-14, GBR/0180/RGO 14/43: 546-547. Cambridge University Library. |
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Admiralty note relating to Christopher Hansteen's variation chart, 1827-04-14, GBR/0180/RGO 14/43: 546-547. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110241 Accessed April 19, 2024. |