Columbia subject headings:
Libertarianism--Spain--History.
Spain--Intellectual life--19th century.
Spain--Intellectual life--20th century.
Harvard subject headings:
Libertarianism--Spain--History.
Spain--Intellectual life--19th century.
Spain--Intellectual life--20th century.
Princeton subject headings:
Libertarianism--Spain--History.
Spain--Intellectual life--19th century.
Spain--Intellectual life--20th century.