Subject: Civil Law
Title: Commentary on civil law
Subject: Philosophy
Title: Scholastic philosophy
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: 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
Subject: Liturgy
Title: Graduale (?)
Subject: Music
Title: Treatise on music