Columbia subject headings:
Catholic Church--Germany--Trier--Clergy.
Church history--Middle Ages, 600-1500.
Dom (Trier, Germany)
Trier (Germany)--Church history.
Harvard subject headings:
Catholic Church--Germany--Trier--Clergy.
Dom (Trier, Germany)--History.
Trier (Germany)--Church history.
Princeton subject headings:
Dom (Trier, Germany)--History.
Trier (Germany)--Church history.