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