Columbia subject headings:
Animal traction--Greece.
Animal traction--Italy.
Carriages and carts--Greece.
Carriages and carts--Italy.
Civilization, Greco-Roman.
Transportation--Greece--History.
Transportation--Italy--History.
Harvard subject headings:
Harnesses--Greece.
Harnesses--Rome.
Transportation--Greece.
Transportation--Rome.
Princeton subject headings:
Harnesses--Greece.
Harnesses--Rome.
Transportation--Greece.
Transportation--Rome.