Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Liturgy
Title: Processionale
Subject: Liturgy
Title: Breviarium cum notis
Subject: Canon Law
Author of work: Willelmus de Monte Lauduno
Title: Comment. in constitutiones Clementinas
Subject: Law
Title: Legal commentary
Subject: Liturgy
Title: Noted service-book
Subject: Theology
Author of work: Petrus Comestor
Title: Historia scholastica
Subject: Civil Law
Author of work: Justinianus
Title: Digestum infortiatum