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