Columbia subject headings:
Anarchism--France--History--19th century.
Anarchists--France--Biography.
Proudhon, P.-J. (Pierre-Joseph), 1809-1865.
Socialism--France--History--19th century.
Socialists--France--Biography.
Harvard subject headings:
Economists--France--Biography
Proudhon, P.-J. (Pierre-Joseph), 1809-1865.
Socialists--France--Biography
Princeton subject headings: