Columbia subject headings:
Harvard subject headings:
Rome (Italy)--Civilization--16th century--Congresses.
Rome (Italy)--Civilization--17th century--Congresses.
Rome (Italy)--Relations--Spain--Congresses.
Spain--Civilization--1516-1700--Congresses.
Spain--Relations--Italy--Rome--Congresses.
Princeton subject headings:
Rome (Italy)--Civilization--16th century--Congresses.
Rome (Italy)--Civilization--17th century--Congresses.
Rome (Italy)--Relations--Spain--Congresses.
Spain--Civilization--1516-1700--Congresses.
Spain--Relations--Italy--Rome--Congresses.