Columbia subject headings:
Alfonso XII, King of Spain, 1857-1885.
María Cristina, Queen, consort of Alfonso XII, King of Spain, 1858-1929.
Spain--Kings and rulers.
Harvard subject headings:
Alfonso XII, King of Spain, 1857-1885.
María Cristina, Queen, consort of Alfonso XII, King of Spain, 1858-1929.
Queens--Spain--Biography
Spain--History--Alfonso XII, 1875-1885.
Spain--Kings and rulers--Biography.
Princeton subject headings:
Alfonso XII, King of Spain, 1857-1885.
María Cristina, Queen, consort of Alfonso XII, King of Spain, 1858-1929.
Queens--Spain--Biography.
Spain--History--Alfonso XII, 1875-1885.
Spain--Kings and rulers--Biography.