Columbia subject headings:
Labor movement--Chile--History.
Recabarren, Luis Emilio, 1876-1924.
Socialism--Chile.
Working class--Chile.
Harvard subject headings:
Labor movement--Chile--History.
Recabarren, Luis Emilio, 1876-1924
Socialism--Chile
Socialists--Chile--Biography.
Working class--Chile
Princeton subject headings: