Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Innocentius IV
Title: In Decretales
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Philosophy
Author of work: Aristoteles
Title: De sophisticis elenchis
Subject: Philosophy
Author of work: Aristoteles
Title: De anima
Subject: Theology
Author of work: Augustinus
Title: De trinitate
Subject: Philosophy
Author of work: Aristoteles
Title: De caelo et mundo
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Augustinus
Title: De trinitate