Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Philosophy
Author of work: Averroes
Title: De spmpno et vigilia, De longitudine et brevitate vitae, De generatione et corruptione
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Theology
Author of work: Augustinus
Title: De libero arbitrio, &c.
Subject: Theology
Author of work: Augustinus
Title: De oribus
Subject: Philosophy
Author of work: Aristoteles
Title: De motu
Subject: Canon Law
Author of work: Innocentius IV
Title: In Decretales
Subject: Philosophy
Title: Definitions of philosophical terms
Subject: Encyclopaedia
Author of work: Rabanus Maurus
Title: De natura rerum
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales