Subject: Law, Canon Law
Title of work: Decretals (with commentary)
Author of work: Gregory IX, pope 1227-41
Place of production: Italy
Subject: Canon Law
Author of work: Guido de Baysio
Title: In Sextum librum decretalium
Subject: Liturgy
Title: Noted service-book
Subject: Theology
Title: Sermo beati Augustini', &c.
Subject: Sermons
Author of work: Fulbertus Carnotensis
Title: Sermo
Subject: Grammar
Author of work: Johannes Balbus
Title: Catholicon
Subject: Theology
Author of work: Thomas Aquinas
Title: Expositio quarti libri Sententiarum Petri Lombardi