Columbia subject headings:
Agricultural laborers--Mediterranean Region.
Classical antiquities.
Working class--Mediterranean Region.
Harvard subject headings:
Agricultural laborers--Mediterranean Region.
Classical antiquities.
Greece--Economic conditions--Congresses.
Rome--Economic conditions--Congresses.
Working class--Greece--Congresses.
Working class--Mediterranean Region.
Working class--Rome--Congresses.
Princeton subject headings:
Labor--Greece--History--Congresses.
Labor--Rome--History--Congresses.