Columbia subject headings:
Harvard subject headings:
Cologne (Germany)--Antiquities, Roman--Exhibitions.
Rhine Province (Germany)--Antiquities, Roman--Exhibitions.
Romans--Germany--Cologne--Exhibitions.
Romans--Germany--Rhine Province--Exhibitions.
Rome--History--Empire, 30 B.C.-284 A.D.--Exhibitions.
Princeton subject headings:
Cologne (Germany)--Antiquities, Roman--Exhibitions.
Rhine Province (Germany)--Antiquities, Roman--Exhibitions.
Romans--Germany--Cologne--Exhibitions.
Romans--Germany--Rhine Province--Exhibitions.
Rome--History--Empire, 30 B.C.-284 A.D.--Exhibitions.