Columbia subject headings:
Harvard subject headings:
Law--Italy--Siena Region--History--To 1500--Sources.
Siena Region (Italy)--Economic conditions--Sources.
Siena Region (Italy)--History--Sources.
Princeton subject headings:
Law--Italy--Siena Region--History--To 1500--Sources.
Siena Region (Italy)--History--Sources.
Siena Region--Economic conditions--Sources.