Columbia subject headings:
Spain--Economic conditions--1918-1975.
Spain--Economic conditions--19th century.
Spain--Economic conditions.
Harvard subject headings:
Spain--Economic conditions--1918-1975.
Spain--Economic conditions--19th century.
Spain--Economic conditions--Regional disparities.
Spain--Economic conditions.
Princeton subject headings:
Spain--Economic conditions--1918-1975.
Spain--Economic conditions--19th century.
Spain--Economic conditions--Regional disparities.