Columbia subject headings:
Campania (Italy)--Emigration and immigration.
Italy--Emigration and immigration.
Naples (Italy)--Emigration and immigration.
Harvard subject headings:
Campania (Italy)--Emigration and immigration.
Italy--Emigration and immigration.
Naples (Italy)--Emigration and immigration.
Princeton subject headings:
Campania (Italy)--Emigration and immigration.
Italy--Emigration and immigration.
Naples (Italy)--Emigration and immigration.