Columbia subject headings:
Spain--Economic conditions--18th century.
Spain--Economic conditions--19th century.
Spain--Economic conditions--20th century.
Spain--Economic conditions--21st century.
Harvard subject headings:
Spain--Economic conditions.
Princeton subject headings:
Spain--Economic conditions--18th century.
Spain--Economic conditions--19th century.
Spain--Economic conditions--20th century.
Spain--Economic conditions--21st century.