Columbia subject headings:
Church and state--Holy Roman Empire--History.
Germany--History--1517-1648.
Holy Roman Empire--History--1517-1648.
Harvard subject headings:
Church and state--Holy Roman Empire--History.
Confession.
Germany--History--1517-1648.
Holy Roman Empire--History--1517-1648.
Princeton subject headings:
Church and state--Holy Roman Empire--History.
Germany--History--1517-1648.
Holy Roman Empire--History--1517-1648.