Columbia subject headings:
Harvard subject headings:
Cities and towns, Medieval--Germany
Coastal ecology--Germany--History--To 1500.
Coastal ecology--Germany--History.
Coasts--Germany--History--To 1500.
Coasts--Germany--History.
Germany--Antiquities.
Land settlement--Germany--History--To 1500.
Land settlement--Germany.
Princeton subject headings:
Excavations (Archaeology)--Germany.
Germany, Northern--Antiquities.
Germany--Antiquities.