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