Columbia subject headings:
Socialists--France--Biography.
Sorel, Georges, 1847-1922.
Syndicalism--France.
Harvard subject headings:
Socialists--France--Biography
Sorel, Georges, 1847-1922
Syndicalism--France.
Princeton subject headings:
Liberalism--France--History.
Socialism--France--History.
Sorel, Georges, 1847-1922.