Subject: Liturgy
Title: Antiphonale
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Thomas Aquinas
Title: Summa theologiae
Subject: Philosophy
Title: Commentary on Aristotle's Ethics
Subject: Theology
Title: Commentary on St Matthew
Subject: Philosophy
Author of work: Aristoteles
Title: Metaphysica
Subject: Canon Law
Title: Canon law
Subject: Medicine
Title: Medicine
Subject: Theology
Title: Theology
Subject: Philosophy
Author of work: Aegidius Romanus
Title: In Physica Aristotelis