Subject: Liturgy
Title: Missale
Subject: Liturgy
Title: Breviarium cum notis
Subject: Civil Law
Title: Commentary on civil law
Subject: Theology
Author of work: Petrus Lombardus
Title: In Psalmos
Subject: Theology
Author of work: Thomas Aquinas
Title: Expositio quarti libri Sententiarum Petri Lombardi
Subject: Theology
Title: Theology
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Liturgy
Title: Graduale
Subject: Canon Law
Title: Antiqua compilatio decretalium III
Subject: Liturgy
Title: Antiphonale