Columbia subject headings:
Balkan Peninsula--Antiquities--Congresses.
Balkan Peninsula--History--Congresses.
Italy--Antiquities--Congresses.
Italy--History--Congresses.
Romania--Antiquities--Congresses.
Romania--History--Congresses.
Harvard subject headings:
Balkan Peninsula--Antiquities--Congresses.
Balkan Peninsula--History--Congresses.
Italy--Antiquities--Congresses.
Italy--History--Congresses.
Romania--Antiquities--Congresses.
Romania--History--Congresses.
Princeton subject headings:
Italy--Antiquities--Congresses.
Italy--Relations--Romania--Congresses.
Romania--Antiquities--Congresses.