Subject: Liturgy
Title: Psalterium
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Thomas Aquinas
Title: Expositio tertii libri Sententiarum
Subject: Theology
Author of work: Thomas Aquinas
Title: Expositio tertii libri Sententiarum
Subject: Theology
Title: Scholastic theology
Subject: Liturgy
Title: Breviarium
Subject: Philosophy
Title: Philosophical questions
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales