Columbia subject headings:
Germany--History--1273-1517.
Germany--History--843-1273.
Germany--History--Hohenstaufen, 1138-1254.
Harvard subject headings:
Germany--History--1273-1517.
Germany--History--843-1273.
Germany--History--Hohenstaufen, 1138-1254.
Hohenstaufen, House of--History.
Princeton subject headings:
Germany--History--1273-1517.
Germany--History--843-1273.