Columbia subject headings:
Alps--History.
Franconia (Germany)--History.
Germany--History--Hohenstaufen, 1138-1254.
Hohenstaufen, House of.
Swabia (Germany)--History.
Harvard subject headings:
Alps--History.
Franconia (Germany)--History.
Germany--History--Hohenstaufen, 1138-1254.
Hohenstaufen, House of.
Swabia (Germany)--History.
Princeton subject headings: