Columbia subject headings:
Danube River Valley--Antiquities, Roman--Congresses.
Harvard subject headings:
Balkan Peninsula--Relations--Rome--Congresses.
Dacia--History--Congresses.
Danube River Valley--Antiquities, Roman--Congresses.
Moesia--History--Congresses.
Pannonia--History--Congresses.
Roman provinces--Balkan Peninsula--Economic conditions--Congresses.
Roman provinces--Balkan Peninsula--History--Congresses.
Romans--Dacia--History--Congresses.
Romans--Moesia--History--Congresses.
Romans--Pannonia--History--Congresses.
Romans--Thrace--History--Congresses.
Rome--Civilization--Congresses.
Rome--Economic integration--History--Congresses.
Rome--History--Empire, 30 B.C.-284 A.D.--Congresses.
Rome--Relations--Balkan Peninsula--Congresses.
Thrace--History--Congresses.
Princeton subject headings:
Danube River Valley--Antiquities, Roman--Congresses.