Porter, Dot2023-05-232014-10-062014-10-012014-10-06https://repository.upenn.edu/handle/20.500.14332/46895http://hdl.library.upenn.edu/1017/d/medren/5941518youtubeHistoryMedieval StudiesOther Arts and HumanitiesVideo Orientation to the University of Pennsylvania Library's LJS 229 - Commentaries on Aristotle and Porphyry.Media