Subject: Theology
Author of work: Gregorius I
Title: De cura pastorali
Subject: Philosophy
Author of work: Aristoteles
Title: De coelo
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Grammar
Author of work: Alexander Nequam
Title: De nominibus utensilium
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani