Porter, Dot2023-05-232023-05-232015-09-172015-04-25https://repository.upenn.edu/handle/20.500.14332/46488http://hdl.library.upenn.edu/1017/d/medren/5858073Astronomy--Early works to 1800Astronomy MedievalJewish astronomy--Early works to 1800 CodicesDiagramsTreatisesManuscripts Hebrew--15th centuryManuscripts RenaissanceBook