Porter, Dot2023-05-232023-05-232015-04-032015-04-25https://repository.upenn.edu/handle/20.500.14332/46498http://hdl.library.upenn.edu/1017/d/medren/5978143Mathematics--Early works to 1800Geometry--Early works to 1800 CodicesDiagramsTreatisesManuscripts Arabic--13th centuryManuscripts MedievalBook