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Citations

Thomas Hedgcock on finding the longitude by an altitude of the sun, moon or star, 1812 - 1827, GBR/0180/RGO 14/35: 272-333. Cambridge University Library.

Thomas Hedgcock on finding the longitude by an altitude of the sun, moon or star, 1812 - 1827, GBR/0180/RGO 14/35: 272-333. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/110008 Accessed February 07, 2023.

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