Columbia subject headings:
Harvard subject headings:
Cities and towns, Ancient--Congresses.
Cities and towns--Etruria--Congresses.
Cities and towns--Italy, Northern--Congresses.
Cities and towns--Italy--Etruria--Congresses.
Princeton subject headings:
Cities and towns, Ancient--Congresses.
Cities and towns--Etruria--Congresses.
Cities and towns--Italy, Northern--Congresses.