Columbia subject headings:
Archaeology--Germany--North Rhine-Westphalia.
Excavations (Archaeology)--Germany--North Rhine-Westphalia.
North Rhine-Westphalia (Germany)--Antiquities--Exhibitions.
Harvard subject headings:
North Rhine-Westphalia (Germany)--Antiquities.
Princeton subject headings:
Archaeology--Germany--North Rhine-Westphalia.
Excavations (Archaeology)--Germany--North Rhine-Westphalia.
North Rhine-Westphalia (Germany)--Antiquities--Exhibitions.