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Ptolemy Claudius Ptolemy was a 2nd-century Greco-Egyptian mathematician and astronomer whose theories dominated Western science for over a millennium., Four Parts The Latin title "Quadripartitum" translates to "Four Parts," the standard name for his astrological treatise, 1484, incunabula A term for books printed before the year 1501, during the "infancy" of the printing press, bookbinding, shelfmark