《Tetrabiblos》Book 1Claudius Ptolemy（Ashmand 英譯 1822）
The first mentioned study has been already explained in the Syntaxis[19] to the utmost practicable extent; for it is complete in itself, and of essential utility even without being blended with the second; to which this treatise will be devoted, and which is not equally self-complete.
段落 tetra-1-ch-2public-domain (Ashmand 1822)
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