Columbia subject headings:
Germany--History--843-1273.
Germany--History--To 843.
Germany--Kings and rulers.
Lorraine (France)--History.
Harvard subject headings:
Germany--History--843-1273.
Germany--History--To 843.
Germany--Kings and rulers.
Princeton subject headings:
Germany--History--843-1273.
Germany--History--To 843.
Germany--Kings and rulers.