Columbia subject headings:
Harvard subject headings:
Gesta Treverorum.
Trier (Germany)--Church history.
Trier (Germany)--History.
Princeton subject headings:
Catholic Church. Archdiocese of Trier (Germany)--History.
Germany--Church history--843-1517.
Germany--Church history--To 843.
Germany--History--843-1273.
Germany--History--To 843.
Germany--Relations--Holy Roman Empire.
Holy Roman Empire--Church history--To 1500.
Trier (Germany)--History--To 1500.