Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Gregorius I
Title: Dialogi
Subject: Theology
Author of work: Thomas Aquinas
Title: In Metaphysica Aristotelis
Subject: Civil Law
Author of work: Justinianus
Title: Institutiones Justiniani
Subject: Theology
Author of work: Gregorius I
Title: De cura pastorali
Subject: Epistolae
Author of work: Gregorius I
Title: Registrum
Subject: Theology
Author of work: Gregorius I
Title: Registrum
Subject: Canon Law
Title: Index to canon law
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales