Subject: Canon Law
Title: Canon law
Subject: Philosophy
Title: Philosophy
Subject: Theology
Title: Scholastic theology
Subject: Liturgy
Title: Graduale
Subject: Biblica
Title: Epistolae Catholicae glo.
Subject: Epistolae
Author of work: Gregorius I
Title: Registrum
Subject: Philosophy
Author of work: Boethius
Title: Topica
Subject: Liturgy
Title: Antiphonale