Subject: Theology
Title: Theological commentary
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Theology
Title: theological questions
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Documentary
Title: Registrum Johannis de Gaunt
Subject: Encyclopaedia
Author of work: Isidorus
Title: Etymologiae
Subject: Theology
Author of work: Origenes
Title: In Leviticum