Columbia subject headings:
Harvard subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Holy Roman Empire--History--Charles V, 1519-1556.
Holy Roman Empire--History--Maximilian I, 1493-1519.
Holy Roman Empire--Kings and rulers.
Princeton subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Holy Roman Empire--History--Charles V, 1519-1556.
Holy Roman Empire--Kings and rulers--Biography.