Columbia subject headings:
Europe--Commerce--Rome--History.
Rome--Commerce--Europe--History.
Harvard subject headings:
Civilization, Greco-Roman.
Europe--Commerce--Rome--History.
Rome--Commerce--Europe--History.
Princeton subject headings:
Civilization, Classical--Commerce.
Europe--Commerce--Rome--History.
Germanic peoples--History.
Greece--History--To 146 B.C.
Rome--Commerce--Europe--History.