Columbia subject headings:
Harvard subject headings:
Antiquities, Prehistoric--Germany--Bochum.
Bochum (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Bochum.
Princeton subject headings:
Antiquities, Prehistoric--Germany--Bochum.
Bochum (Germany)--Antiquities.
Excavations (Archaeology)--Germany--Bochum.