Columbia subject headings:
Excavations (Archaeology)--Germany--Havel River Region.
Havel River Region (Germany)--Antiquities.
Harvard subject headings:
Excavations (Archaeology)--Germany--Havel River Region.
Havel River Region (Germany)--Antiquities.
Princeton subject headings:
Extinct cities--Germany--Havel River Region.
Havel River Region (Germany)--History--Sources.
Villages--Germany--Havel River Region--History.