Columbia subject headings:
Agriculture--Economic aspects--Rome--History--Congresses.
Land tenure--Rome--History--Congresses.
Rome--Economic policy--Congresses.
Harvard subject headings:
Agriculture--Economic aspects--Rome--History--Congresses.
Land tenure--Rome--History--Congresses.
Rome--Economic policy--Congresses.
Princeton subject headings:
Agriculture--Economic aspects--Rome--History--Congresses.
Land tenure--Rome--History--Congresses.
Rome--Economic policy--Congresses.