Columbia subject headings:
Amphoras--Expertising--Spain.
Italy--Commerce--Spain--History--To 500.
Spain--Antiquities, Roman.
Spain--Commerce--Italy--History--To 500.
Harvard subject headings:
Amphoras--Expertising--Spain.
Italy--Commerce--Spain--History--To 500.
Spain--Antiquities, Roman.
Spain--Commerce--Italy--History--To 500.
Princeton subject headings: