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Ptolemy: Ptolemy's Tetrabiblos : or Quadripartite, being four books of the influence of the stars ... with a preface, explanatory notes, and an appendix containing extracts from the Almagest of Ptolemy and the whole of his Centiloquy, together with a short notice of Mr. Ranger's zodiacal planisphere and an explanatory plate, trans. by J. M. Ashmand, contrib. by Proclus and Philip Ranger (Gutenberg ebook)