Columbia subject headings:
Catholic Church--Italy--Naples (Kingdom)--Congresses.
Naples (Kingdom)--Politics and government--1735-1816--Congresses.
Harvard subject headings:
Catholic Church--Italy--Naples (Kingdom)--Congresses.
Naples (Kingdom)--Politics and government--1735-1816--Congresses.
Princeton subject headings:
Catholic Church--Italy--Naples (Kingdom)--Congresses.
Naples (Kingdom)--Politics and government--1735-1816--Congresses.