Citations
George Graydon on an instrument for detecting the variation of the compass, 1825-06-02, GBR/0180/RGO 14/43: 517-518. Cambridge University Library. |
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George Graydon on an instrument for detecting the variation of the compass, 1825-06-02, GBR/0180/RGO 14/43: 517-518. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110237 Accessed June 03, 2024. |