Columbia subject headings:
Harvard subject headings:
Social change--Spain--History--Congresses.
Social classes--Spain--History--Congresses.
Social structure--Spain--History--Congresses.
Spain--History--Bourbons, 1700---Congresses.
Spain--History--House of Austria, 1516-1700--Congresses.
Spain--Social conditions--To 1800--Congresses.
Spain--Social conditions--To 1800.
Princeton subject headings:
Social classes--Spain--History--Congresses.
Social structure--Spain--History--Congresses.
Spain--History--Bourbons, 1700---Congresses.
Spain--History--House of Austria, 1516-1700--Congresses.
Spain--Social conditions--To 1800--Congresses.