Columbia subject headings:
Harvard subject headings:
Anarchism--France--Congresses.
Education--France--Congresses
Ferrer Guardia, Francisco, 1859-1909--Influence--Congresses.
Socialism--France--Congresses.
Princeton subject headings:
Anarchists--Spain--Biography.
Barcelona (Spain)--History--Revolution, 1909.
Educators--Spain--Biography.
Ferrer Guardia, Francisco, 1859-1909.
Spain--History--Alfonso XIII, 1886-1931.