Columbia subject headings:
Harvard subject headings:
Mayer, Daniel.
Parti socialiste (France)--History--20th century.
Socialism--France--20th century.
Socialism--France--History--20th century
Socialists--France--Biography
Princeton subject headings:
Mayer, Daniel.
Parti socialiste (France)--History--20th century.
Socialism--France--History--20th century.
Socialists--France--Biography.