Columbia subject headings:
Harvard subject headings:
Drang nach Osten.
Ethnology--Europe, Eastern
Europe, Eastern--History.
Germans--Europe, Eastern
Germans--Europe, Eastern--History.
Germany--History--To 1517.
Germany--History.
Princeton subject headings:
Europe, Central--History.
Europe, Eastern--History.
Germans--Europe, Central--History.
Germans--Europe, Eastern--History.
Germany--History--To 1517.