Columbia subject headings:
Harvard subject headings:
Excavations (Archaeology)--Congresses
Excavations (Archaeology)--Italy--Congresses
Excavations (Archaeology)--Italy--Lazio--Congresses.
Italy--Antiquities--Congresses.
Lazio (Italy)--Antiquities--Congresses.
Princeton subject headings:
Excavations (Archaeology)--Congresses.
Excavations (Archaeology)--Italy--Congresses.
Italy--Antiquities--Congresses.