Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Theology
Author of work: Gregorius I
Title: Dialogi
Subject: Theology
Author of work: Henricus de Gandavo
Title: Quodlibeta
Subject: Theology
Author of work: Henricus de Gandavo
Title: Quodlibeta
Subject: Grammar
Title: Grammatical verse
Subject: Liturgy
Title: Graduale
Subject: Liturgy
Title: Graduale
Subject: Sermons
Author of work: Guido Ebroicensis
Title: Sermones
Subject: Medicine
Author of work: Galen
Title: Tegni Galieni'
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales