Columbia subject headings:
Agricultural contracts--Italy--Lazio--History.
Land use--Italy--Lazio--History.
Harvard subject headings:
Agricultural contracts--Italy--Lazio--History.
Land use--Italy--Lazio--History.
Lazio (Italy)--Economic conditions.
Lazio (Italy)--History.
Princeton subject headings:
Agricultural contracts--Italy--Lazio--History.
Land use--Italy--Lazio--History.