Columbia subject headings:
Rome--Civilization--Congresses.
Technology transfer--Rome--History--Congresses.
Technology--Rome--History--Congresses.
Harvard subject headings:
Technology transfer--Rome--Congresses.
Technology--Greece--History--Congresses.
Technology--Rome--History--Congresses.
Princeton subject headings:
Rome--Civilization--Congresses.
Technology transfer--Rome--History--Congresses.
Technology--Rome--History--Congresses.