Columbia subject headings:
Feudalism--Spain--History.
Middle class--Spain--History--To 1500.
Social classes--Spain--History--To 1500.
Spain--Social conditions.
Harvard subject headings:
Feudalism--Spain--History.
Middle class--Spain--History--To 1500.
Social classes--Spain--History--To 1500.
Spain--Social conditions--History.
Princeton subject headings:
Feudalism--Spain--History.
Middle class--Spain--History--To 1500.
Social classes--Spain--History--To 1500.
Spain--Social conditions.