Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Law - customary
Title: Consuetudines gentium
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus