Columbia subject headings:
Harvard subject headings:
Logistics--History--Exhibitions.
Rhineland (Germany)--Antiquities, Roman--Exhibitions.
Rhineland (Germany)--Commerce--History--Exhibitions.
Transportation--Germany--Rhineland--History--Exhibitions.
Princeton subject headings:
Colonia Ulpia Traiana Site (Xanten, Germany)--Commerce--Exhibitions.
Trade routes--Rhine River--Exhibitions.
Waterways--Germany--Xanten--History--Exhibitions.
Xanten (Germany)--Antiquities, Roman--Exhibitions.