Columbia subject headings:
Charlemagne, Emperor, 742-814.
France--Kings and rulers--Biography.
Germany--History--To 843.
Holy Roman Empire--Kings and rulers--Biography.
Harvard subject headings:
Charlemagne, Emperor, 742-814.
France--Kings and rulers--Biography.
Holy Roman Empire--Kings and rulers--Biography.
Princeton subject headings:
Charlemagne, Emperor, 742-814.
France--Kings and rulers--Biography.
Holy Roman Empire--Kings and rulers--Biography.