Columbia subject headings:
Harvard subject headings:
Germany, Northern--Antiquities, Slavic.
Land settlement--Germany, Northern--History--To 1500.
Slavs, Western--Germany, Northern--History--To 1500.
Princeton subject headings:
Europe--History--476-1492.
Germany, Northern--Antiquities, Slavic.
Land settlement--Germany, Northern--History--To 1500.
Slavs, Western--Germany, Northern--History--To 1500.