Columbia subject headings:
Italy--History--1559-1789--Congresses.
Italy--Relations--Spain--Congresses.
Philip II, King of Spain, 1527-1598--Congresses.
Spain--Civilization--1516-1700--Congresses.
Spain--Politics and government--1556-1598--Congresses.
Spain--Relations--Italy--Congresses.
Harvard subject headings:
Italy--History--1492-1559--Congresses.
Philip II, King of Spain, 1527-1598--Congresses.
Spain--History--Philip II, 1556-1598--Congresses.
Princeton subject headings:
Italy--History--1492-1559--Congresses.
Philip II, King of Spain, 1527-1598--Congresses.
Spain--History--Philip II, 1556-1598--Congresses.