Columbia subject headings:
Bishops--Holy Roman Empire--History.
Catholic Church--Bishops--History.
Church and state--Holy Roman Empire.
Holy Roman Empire--Church history.
Holy Roman Empire--History--Franconian House, 1024-1125.
Holy Roman Empire--History--Saxon House, 919-1024.
Harvard subject headings:
Bishops--Holy Roman Empire--History.
Catholic Church--Bishops--History.
Church and state--Holy Roman Empire
Holy Roman Empire--Church history.
Holy Roman Empire--History--Franconian House, 1024-1125.
Holy Roman Empire--History--Saxon House, 919-1024.
Princeton subject headings:
Bishops--Holy Roman Empire--History.
Catholic Church--Bishops--History.
Church and state--Holy Roman Empire.
Holy Roman Empire--Church history.
Holy Roman Empire--History--Franconian House, 1024-1125.
Holy Roman Empire--History--Saxon House, 919-1024.