Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Sermons
Title: Sermones
Subject: Philosophy
Title: Questiones super libros de generacione et corrupcione', &c.
Subject: Philosophy
Title: Comment. on Aristotle, De generatione et corruptione
Subject: Philosophy
Title: Philosophy
Subject: Philosophy
Title: Commentary on the Ethics of Aristotle
Subject: Medicine
Author of work: Rogerius
Title: Chirurgia
Subject: Medicine
Author of work: Rogerius
Title: Chirurgia
Subject: Astronomy
Title: Astronomy
Subject: Philosophy
Author of work: Aristoteles
Title: Physica