Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Rhetoric
Title: De tropis', &c.
Subject: Theology
Author of work: Thomas Aquinas
Title: De veritate
Subject: Theology
Author of work: Gregorius I
Title: De cura pastorali
Subject: Theology
Author of work: Gregorius I
Title: De cura pastorali
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Title: Commentary on Decretals
Subject: Dictionary
Title: Definitions of words