Citations
Ralph Walker's azimuth compass, 1793 - 1795, GBR/0180/RGO 14/29: 99-126. Cambridge University Library. |
|
Ralph Walker's azimuth compass, 1793 - 1795, GBR/0180/RGO 14/29: 99-126. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/109868 Accessed April 19, 2024. |