Columbia subject headings:
Spain--History--19th century.
Spain--History--20th century.
Harvard subject headings:
Latin America--History--19th century.
Latin America--History--20th century.
Spain--History--19th century.
Spain--History--20th century.
Princeton subject headings:
Latin America--History--19th century.
Latin America--History--20th century.
Spain--History--19th century.
Spain--History--20th century.
Spain--History.