Columbia subject headings:
Harvard subject headings:
Agriculture and state--Italy--Campania--History.
Agriculture--Economic aspects--Italy--Campania--History.
Campania (Italy)--Population, Rural--History.
Rural population--Italy--Campania--History.
Princeton subject headings:
Agriculture and state--Italy--Campania--History.
Agriculture--Economic aspects--Italy--Campania--History.
Rural population--Italy--Campania--History.