Columbia subject headings:
Maremma (Italy)--Economic conditions.
Maremma (Italy)--History.
Tuscany (Italy)--Economic conditions--To 1434.
Tuscany (Italy)--History--To 1434.
Harvard subject headings:
Princeton subject headings:
Maremma (Italy)--Economic conditions.
Maremma (Italy)--History.
Tuscany (Italy)--Economic conditions--To 1434.
Tuscany (Italy)--History--To 1434.