Columbia subject headings:
Harvard subject headings:
Europe--Politics and government--1517-1648--Congresses.
Monarchy--Spain--History--16th century--Congresses.
Monarchy--Spain--History--17th century--Congresses.
Reformers--Spain--History--16th century--Congresses.
Reformers--Spain--History--17th century--Congresses.
Spain--History--17th century--Congresses.
Spain--History--Charles I, 1516-1556--Congresses.
Spain--Politics and government--1516-1556--Congresses.
Princeton subject headings:
Political scientists--Spain--History--17th century--Congresses.
Political scientists--Spain--History--18th century--Congresses.
Spain--Politics and government--17th century--Congresses.
Spain--Politics and government--18th century--Congresses.