Columbia subject headings:
Harvard subject headings:
Catholic Church--Germany--Cologne--History--13th century.
Catholic Church--Germany--Cologne--History--14th century.
Catholic Church--Germany--Cologne--History--15th century.
Catholic Church--Germany--Cologne--History--16th century.
Cologne (Germany)--Church history--13th century.
Cologne (Germany)--Church history--14th century.
Cologne (Germany)--Church history--15th century.
Cologne (Germany)--Church history--16th century.
Indulgences--Germany--Cologne--History.
Princeton subject headings:
Catholic Church--Germany--Cologne--History.
Cologne (Germany)--Church history.
Indulgences--History.