Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Philosophy
Author of work: Boethius
Title: Topica
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Philosophy
Author of work: Bartholomaeus Anglicus
Title: De proprietatibus rerum
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus