Columbia subject headings:
Seventeenth century--Congresses.
Sixteenth century--Congresses.
Spain--Civilization--1516-1700--Congresses.
Harvard subject headings:
Seventeenth century--Congresses.
Sixteenth century--Congresses.
Spain--Civilization--1516-1700--Congresses.
Princeton subject headings:
Europe--Civilization--Congresses.
Seventeenth century--Congresses.
Sixteenth century--Congresses.
Spain--Civilization--Congresses.
Spain--Relations--Europe--Congresses.