Columbia subject headings:
Archaeological museums and collections--Germany--Essen--Exhibitions.
Ruhr Museum (Essen, Germany)--Archaeological collections--Exhibitions.
Harvard subject headings:
Archaeological museums and collections--Germany--Essen--Exhibitions.
Ruhr Museum (Essen, Germany)--Archaeological collections--Exhibitions.
Princeton subject headings:
Archaeological museums and collections--Germany--Essen--Exhibitions.
Ruhr Museum (Essen, Germany)--Archaeological collections--Exhibitions.