Columbia subject headings:
Harvard subject headings:
Church and state--Europe--History--Congresses.
Church and state--Germany--History--Congresses.
Europe--Church history--16th century--Congresses.
Germany--Church history--16th century--Congresses.
Reformation--Europe--Congresses.
Reformation--Germany--Congresses.
Princeton subject headings:
Europe--History--1517-1648--Congresses.
Germany--History--1517-1648--Congresses.
Holy Roman Empire--History--1517-1648--Congresses.
Reformation--Europe--Congresses.
Reformation--Germany--Congresses.
Reformation--Holy Roman Empire--Congresses.