Columbia subject headings:
Harvard subject headings:
Naples Region (Italy)--Antiquities.
Naples Region (Italy)--History.
Phlegraean Plain (Italy)--Antiquities.
Phlegraean Plain (Italy)--History.
Rivers--Italy--Naples Region--History.
Princeton subject headings:
Naples Region (Italy)--Antiquities.
Naples Region (Italy)--History.
Phlegraean Plain (Italy)--Antiquities.
Phlegraean Plain (Italy)--History.
Rivers--Italy--Naples Region--History.