Columbia subject headings:
Spain--Civilization--1516-1700--Congresses.
Spain--Civilization--711-1516--Congresses.
Spain--Ethnic relations--History--Congresses.
Toleration--Spain--History--Congresses.
Harvard subject headings:
Spain--Civilization--1516-1700--Congresses.
Spain--Civilization--711-1516--Congresses.
Spain--Ethnic relations--History--Congresses.
Toleration--Spain--History--Congresses.
Princeton subject headings:
Spain--Civilization--1516-1700--Congresses.
Spain--Civilization--711-1516--Congresses.
Spain--Ethnic relations--History--Congresses.
Toleration--Spain--History--Congresses.