Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Theology
Author of work: Petrus Lombardus
Title: Sententiae
Subject: Theology
Author of work: Petrus Lombardus
Title: Sententiae
Subject: Theology
Author of work: Petrus Lombardus
Title: Sententiae
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales