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Citations

Examples of Hedgcock's method of finding longitude, 1812 - 1813, GBR/0180/RGO 14/35: 274-280. Cambridge University Library.

Examples of Hedgcock's method of finding longitude, 1812 - 1813, GBR/0180/RGO 14/35: 274-280. Cambridge University Library. https://archivesearch.lib.cam.ac.uk/repositories/2/archival_objects/159834 Accessed March 28, 2023.

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