Subject: Liturgy
Title: Missale
Subject: Philosophy
Title: Natural philosophy
Subject: Civil Law
Author of work: Justinianus
Title: Codex Justiniani
Subject: Liturgy
Title: Breviarium cum notis
Subject: Liturgy
Title: Breviarium cum notis
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Liturgy
Title: Breviarium cum notis
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Canon Law
Author of work: Bernardus de Botone
Title: Casus decretalium
Subject: Theology
Title: Flores Bernardi