Columbia subject headings:
Middle class--Spain--History--19th century.
Popular culture--Spain--History--19th century.
Spain--Civilization--19th century.
Spain--Social conditions--19th century.
Harvard subject headings:
Middle class--Spain--History--19th century.
Popular culture--Spain--History--19th century.
Spain--Civilization--19th century.
Spain--Social conditions--19th century.
Princeton subject headings:
Middle class--Spain--History--19th century.
Spain--Civilization--19th century.
Spain--Social conditions--19th century.