Subject: Music
Title: Conducti and other music
Subject: Civil Law
Title: Treatise on civil law
Subject: Civil Law
Title: Treatise on civil law
Subject: Science
Author of work: Alhasen
Title: Optica
Subject: Medicine
Title: Medicine
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Theology
Title: Scholastic theology
Subject: Philosophy
Title: Philosophical questions
Subject: Grammar
Title: Grammatical verse
Subject: Philosophy
Title: Philosophical questions