Columbia subject headings:
Spain--History--1939-1975.
Spain--History--1975-
Spain--History--19th century.
Spain--History--20th century.
Spain--History--Alfonso XII, 1875-1885.
Spain--History--Alfonso XIII, 1886-1931.
Spain--History--Bourbon Restoration, 1814-1868.
Spain--History--Napoleonic Conquest, 1808-1813.
Spain--History--Revolutionary period, 1868-1875.
Harvard subject headings:
Spain--History--19th century.
Spain--History--20th century.
Princeton subject headings:
Spain--History--19th century.
Spain--History--20th century.