Subject: Theology
Author of work: Thomas Aquinas
Title: Expositio primi libri Sententiarum
Subject: Civil Law
Author of work: Justinianus
Title: Institutiones Justiniani
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Biblica
Title: Epistolae Pauli
Subject: Philosophy
Author of work: Aristoteles
Title: De caelo et mundo
Subject: Liturgy
Title: Missale
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Philosophy
Author of work: Aristoteles
Title: De generatione et corruptione
Subject: Canon Law
Title: Treatise on canon law