Columbia subject headings:
Harvard subject headings:
Commons--Italy--Siena (Province)--History--Sources.
Commons--Italy--Siena (Province)--History.
Public use--Italy--Siena (Province)--History--Sources.
Public use--Italy--Siena (Province)--History.
Siena (Italy : Province)--History--Sources.
Siena (Italy : Province)--History.
Princeton subject headings:
Commons--Italy--Siena--History.
Land use--Law and legislation--Italy--Siena--History.
Law--Italy--Siena--History.