Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Title: Scholastic theology
Subject: Logic
Title: Questions on logic
Subject: Philosophy
Title: Questiones super libros de generacione et corrupcione', &c.
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Theology
Title: Commentary on Jerome's preface to I Kings
Subject: Philosophy
Title: Comment. on Aristotle, De generatione et corruptione
Subject: Philosophy
Author of work: Aristoteles
Title: De generatione et corruptione
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Moral philosophy
Title: Moral philosophy/theology