Subject: Science
Author of work: Alhasen
Title: Optica
Subject: Sermons
Author of work: Bernardus Clarevallensis
Title: Sermones super Cantica canticorum
Subject: Science
Author of work: Profatius Judaeus
Title: Canons on the new quadrant
Subject: Sermons
Title: Sermones
Subject: Liturgy
Title: Breviarium
Subject: Epistolae
Author of work: Leo I Papa
Title: Epistolae
Subject: Sermons
Title: Sermones
Subject: Liturgy
Title: Antiphonale
Subject: Liturgy
Title: Missale
Subject: Civil Law
Author of work: Vacarius
Title: Liber pauperum