Columbia subject headings:
Ascoli Piceno (Italy)--History--Congresses.
Marche (Italy)--Antiquities--Congresses.
Marche (Italy)--History--Congresses.
Harvard subject headings:
Ascoli Piceno (Italy)--History--To 1500--Congresses.
Marche (Italy)--History--To 1500--Congresses.
Princeton subject headings:
Ascoli Piceno (Italy)--History--Congresses.
Marche (Italy)--Antiquities--Congresses.
Marche (Italy)--History--Congresses.