Columbia subject headings:
Spain--Economic conditions--1918-1975.
Spain--History--1939-1975.
Spain--Social conditions--1939-1975.
Harvard subject headings:
Spain--Economic conditions--1918-1975.
Spain--History--1939-1975.
Spain--Social conditions--1939-1975.
Princeton subject headings:
Spain--Economic conditions--1918-1975.
Spain--History--1939-1975.
Spain--Social conditions--1939-1975.