Published
Fonds consists of a book titled "Tables to Facilitate the Practice of Great Circle Sailing and the Determination of Azimuths and their Application to the Construction of Gnomonic Charts" by John Thomas Towson and Mr. J.W. Atherton, printed by the hydrographic office, admiralty in 1912.
Donated by Commander A.G. Coning, 20 June 1966.
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