Columbia subject headings:
Harvard subject headings:
Ferrara (Italy : Province)--Economic conditions.
Ferrara (Italy : Province)--Historiography.
Ferrara (Italy : Province)--History--17th century.
Ferrara (Italy : Province)--History--18th century.
Ferrara (Italy : Province)--Social conditions.
Ferrara (Italy)--Economic conditions.
Ferrara (Italy)--Historiography.
Ferrara (Italy)--History.
Ferrara (Italy)--Social conditions.
Princeton subject headings:
Ferrara (Italy)--Economic conditions.
Ferrara (Italy)--History.