Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Title: Moral theology
Subject: Liturgy
Title: Missale
Subject: Liturgy
Title: Breviarium
Subject: Civil Law
Author of work: Justinianus
Title: Institutiones Justiniani
Subject: Liturgy
Title: Breviarium
Subject: Civil Law
Author of work: Justinianus
Title: Digestum vetus
Subject: Civil Law
Author of work: Justinianus
Title: Digestum
Subject: Canon Law
Title: Casus decretalium (?)
Subject: Theology
Title: Theology