Columbia subject headings:
Feudalism--Spain--History.
Spain--History--711-1516.
Spain--Rural conditions.
Spain--Social conditions--To 1800.
Harvard subject headings:
Feudalism--Spain--History.
Spain--History--711-1516.
Spain--Rural conditions
Spain--Social conditions--To 1800.
Princeton subject headings:
Feudalism--Spain.
Social history--Medieval, 500-1500.
Spain--History--711-1516.
Spain--Rural conditions--History.
Spain--Social conditions--To 1800.