Columbia subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Holy Roman Empire--History--Charles V, 1519-1556.
Reformation.
Harvard subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Church and state--Holy Roman Empire--History--16th century.
Holy Roman Empire--History--Charles V, 1519-1556.
Reformation--Holy Roman Empire.
Princeton subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Holy Roman Empire--History--Charles V, 1519-1556.
Reformation.