Columbia subject headings:
Harvard subject headings:
Classical antiquities--Congresses.
Danube River Valley--Antiquities, Roman--Congresses.
France--Antiquities, Roman--Congresses.
Gaul--Antiquities--Congresses.
Gaul--History--58 B.C.-511 A.D.--Congresses.
Germany--Antiquities, Roman--Congresses.
Numismatics, Roman--Congresses.
Princeton subject headings:
Roman provinces--Congresses.
Romans--Germany--Congresses.
Rome--History--Empire, 284-476--Congresses.
Rome--History--Empire, 30 B.C.-284 A.D.--Congresses.