Subject: Liturgy
Title: Missale
Subject: Philosophy
Title: Questions on natural philosophy
Subject: Liturgy
Title: Manuale
Subject: Liturgy
Title: Sequentiae
Subject: Liturgy
Title: Breviarium
Subject: Theology
Title: Comment. on Psalms
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Author of work: Thomas Aquinas
Title: Summa theologiae
Subject: Law
Title: Legal treatise
Subject: Medicine
Title: Medicine