Columbia subject headings:
Etruria--Antiquities--Congresses.
Etruria--Commerce--Europe--Congresses.
Europe--Antiquities, Roman--Congresses.
Europe--Antiquities--Congresses.
Europe--Commerce--Italy--Etruria--Congresses.
Europe--Commerce--Rome--Congresses.
Rome--Commerce--Europe--Congresses.
Harvard subject headings:
Etruria--Antiquities--Congresses.
Etruria--Commerce--Europe--Congresses.
Europe--Antiquities, Roman--Congresses.
Europe--Antiquities--Congresses.
Europe--Commerce--Etruria--Congresses.
Europe--Commerce--Rome--Congresses.
Rome--Commerce--Europe--Congresses.
Princeton subject headings:
Etruria--Antiquities--Congresses.
Etruria--Commerce--Europe--Congresses.
Europe--Antiquities, Roman--Congresses.
Europe--Antiquities--Congresses.
Europe--Commerce--Etruria--Congresses.
Europe--Commerce--Rome--Congresses.
Rome--Commerce--Europe--Congresses.