Columbia subject headings:
Harvard subject headings:
Church and state--Germany--Congresses.
Church and state--Holy Roman Empire--Congresses.
Germany--History--To 1517--Congresses.
Holy Roman Empire--History--To 1517--Congresses.
Papacy--History--To 1500--Congresses.
Sovereignty--History--Congresses.
Princeton subject headings:
Church and state--Germany--Congresses.
Church and state--Holy Roman Empire--Congresses.
Germany--History--To 1517--Congresses.
Holy Roman Empire--History--To 1517--Congresses.
Papacy--History--To 1500--Congresses.
Sovereignty--History--Congresses.