Subject: Music
Title: Polyphonic music
Subject: Canon Law
Author of work: Guido de Baysio
Title: Comment. in Sextum librum Decretalium
Subject: Canon Law
Author of work: Gratianus
Title: Decretum
Subject: Canon Law
Title: Antiqua compilatio Decretalium III
Subject: Theology
Title: theological questions
Subject: Grammar
Author of work: Johannes Balbus
Title: Catholicon
Author of work: vacant
Title: vacant
Author of work: vacant
Title: vacant
Subject: Medicine
Title: Medicine
Subject: Theology
Author of work: Origenes
Title: In Leviticum