Citations
Petition by Robert Blair on a method of adjusting Hadley's quadrant, 1782-12-06, GBR/0180/RGO 14/11: 34-36. Cambridge University Library. |
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Petition by Robert Blair on a method of adjusting Hadley's quadrant, 1782-12-06, GBR/0180/RGO 14/11: 34-36. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/109496 Accessed June 06, 2023. |