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: Biblica
Author of work: Petrus Lombardus
Title: Glossa in Epistolas Pauli
Subject: Canon Law
Title: Liber sextus Decretalium
Subject: Theology
Author of work: Petrus Lombardus
Title: Sententiae
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus