Columbia subject headings:
Spain--History--Republic, 1873-1875.
Spain--History--Revolutionary period, 1868-1875.
Harvard subject headings:
Spain--History--Republic, 1873-1875.
Spain--History--Revolutionary period, 1868-1875.
Princeton subject headings:
Spain--History--Republic, 1873-1875.
Spain--History--Revolutionary period, 1868-1875.