Columbia subject headings:
Harvard subject headings:
Italy--History--16th century--Congresses.
Italy--History--17th century--Congresses.
Naples (Kingdom)--History--Spanish rule, 1442-1707--Congresses.
Spaniards--Italy--History--16th century--Congresses.
Spaniards--Italy--History--17th century--Congresses.
Princeton subject headings:
Naples (Kingdom)--History--Spanish rule, 1442-1707--Congresses.
Naples (Kingdom)--Relations--Spain.
Spain--Relations--Italy--Naples (Kingdom).