Subject: Theology
Author of work: Petrus Lombardus
Title: Sententiae
Subject: Liturgy
Title: Noted service-book
Subject: Philosophy
Author of work: Boethius
Title: De consolatione philosophiae
Subject: Astronomy
Title: Comment. on Almagest
Subject: Liturgy
Title: Graduale
Subject: Liturgy
Title: Graduale
Subject: Biblica
Author of work: Augustinus
Title: In Psalmos 101--150
Subject: Philosophy
Author of work: Boethius
Title: De consolatione philosophiae
Subject: Astronomy
Title: Comment. on Almagest
Subject: Astronomy
Title: Comment. on Almagest