Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Philosophy
Title: Commentary on Aristotle's Physics
Subject: Liturgy
Title: Breviarium
Subject: Encyclopaedia
Author of work: Rabanus Maurus
Title: De natura rerum
Subject: Theology
Author of work: Thomas Walden
Title: Doctrinale fidei
Subject: Liturgy
Title: Breviarium
Subject: Theology
Author of work: Thomas Walden
Title: Doctrinale fidei
Subject: Theology
Title: Theological commentary
Subject: Theology
Author of work: Petrus Comestor
Title: Historia scholastica
Subject: Liturgy
Title: Psalterium