Gem of the Astral Sciences by Thomas Oxley (1848) Oxley, Thomas, Esq. 'The Gem of the Astral Sciences, or Mathematics of Celestial Philosophy; with Improved Formulae, and all the Rules of Calculations Used Therein; New and Expeditious Tables of Right Ascensions & Declinations of the Planets, and Four Large Copper-Plates, With Ample Instructions, Illustrating the […]

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