《Tetrabiblos》The Quality And Nature Of The EffectClaudius Ptolemy（Ashmand 英譯 1822）
The discrimination of the peculiar properties and character of the effect about to be produced, and of its good or evil nature, occupies the fourth and last division of this part of the subject.
段落 tetra-2-thequality-1public-domain (Ashmand 1822)
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