Columbia subject headings:
Food supply--Government policy--Italy--Rome--History--17th century.
Food supply--Italy--Rome--History--17th century.
Harvard subject headings:
Agriculture and state--Italy--Rome.
Food prices--Italy--Rome--History.
Food supply--Government policy--Italy--Rome--History--17th century.
Food supply--Italy--Rome--History--17th century.
Food supply--Italy--Rome--History.
Grain trade--Italy--Rome.
Princeton subject headings:
Food supply--Government policy--Italy--Rome--History--17th century.
Food supply--Italy--Rome--History--17th century.