《Tetrabiblos》That Prescience Is UsefulClaudius Ptolemy（Ashmand 英譯 1822）
It commences, introductorily, with an account of the efficient properties of each of the heavenly bodies, taken from the rules of the ancients, whose observations were founded in nature.
段落 tetra-1-thatpresci-45public-domain (Ashmand 1822)
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