Columbia subject headings:
Harvard subject headings:
Consorzio bonifica Trasimeno--History.
Reclamation of land--Italy--Trasimeno, Lake, Region--History.
Water resources development--Italy--Trasimeno, Lake, Region--History.
Princeton subject headings:
Consorzio bonifica Trasimeno.
Reclamation of land--Italy--Trasimeno, Lake--History.