Subject: Liturgy
Title: Breviarium
Subject: Theology
Author of work: Petrus Lombardus
Title: Sententiae
Subject: Theology
Title: Commentary on bk. 4 of the Sentences
Subject: Theology
Title: Commentary on bk. 4 of the Serntences of Petrus Lombardus
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Philosophy
Author of work: Aristoteles
Title: De caelo et mundo
Subject: Philosophy
Author of work: Aristoteles
Title: Meteora