Columbia subject headings:
Greece--Commerce--History--Congresses.
Greece--Economic conditions--To 146 B.C.--Congresses.
Iran--Commerce--History--Congresses.
Iran--Economic conditions--Congresses.
Rome--Commerce--History--Congresses.
Rome--Economic conditions--510-30 B.C.--Congresses.
Harvard subject headings:
Greece--Commerce--History--Congresses.
Greece--Economic conditions--To 146 B.C.--Congresses.
Iran--Commerce--History--Congresses.
Iran--Economic conditions--Congresses.
Rome--Commerce--History--Congresses.
Rome--Economic conditions--510-30 B.C.--Congresses.
Princeton subject headings:
Greece--Commerce--History--Congresses.
Greece--Economic conditions--To 146 B.C.--Congresses.
Iran--Commerce--History--Congresses.
Iran--Economic conditions--Congresses.
Rome--Commerce--History--Congresses.
Rome--Economic conditions--510-30 B.C.--Congresses.