Subject: Canon Law
Title: Commentary on Decretals
Subject: Canon Law
Title: Commentary on Decretals
Subject: Canon Law
Title: Commentary on Decretals
Subject: Canon Law
Title: Commentary on Decretum
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Medicine
Author of work: Aegidius Corboliensis
Title: De urinis
Subject: Theology
Author of work: Hugo de Folieto
Title: De claustro animae
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Moral philosophy
Author of work: Poggius
Title: De infelicitate principum
Subject: Logic
Title: Vetus logica (Boethius, De differentiis topicis)