Subject: Liturgy
Title: Missale
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Civil Law
Author of work: Justinianus
Title: Digestum infortiatum
Subject: Philosophy
Title: Commentary on Aristotle's Ethics
Subject: Theology
Author of work: Robertus Kilwardby
Title: Tabula super Sententias Petri Lombardi
Subject: Logic
Title: Logic
Subject: Liturgy
Title: Missale