Subject: Philosophy
Title: On predicaments
Subject: Canon Law
Author of work: Roffredus Beneventanus
Title: Summa Roffredi
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Canon Law
Author of work: Gratianus
Title: Decretum Gratiani
Subject: Canon Law
Author of work: Gregorius IX
Title: Decretales
Subject: Liturgy
Title: Breviarium cum notis
Subject: Theology
Author of work: Gregorius I
Title: Moralia
Subject: Liturgy
Title: Breviarium cum notis