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Tractatus Arithmethice Practice qui dicitur Algorismus (a Petro sanchez Ciruelo nouiter cōpilatus). G.L.
Pedro CIRUELO
出版1509
URLhttp://books.google.com.hk/books?id=xzwOHSTU4XMC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN