Columbia subject headings:
Harvard subject headings:
Anarchism--Brazil--São Paulo--History--20th century.
Anarchists--Italy--Attitudes.
De Ambris, Alceste, 1874-1934--Political and social views.
Labor leaders--Italy--Attitudes.
Labor unions and communism--Brazil--São Paulo--History--20th century.
Labor unions and fascism--Brazil--São Paulo--History--20th century.
Rossoni, Edmondo, 1884-1965--Political and social views.
Sorelli, Giulio, 1877---Political and social views.
Syndicalism--Brazil--São Paulo--History--20th century.
Princeton subject headings:
Anarchism--Brazil--São Paulo--History--20th century.
Anarchists--Italy--Attitudes.
De Ambris, Alceste, 1874-1934--Political and social views.
Labor leaders--Italy--Attitudes.
Labor unions and communism--Brazil--São Paulo--History--20th century.
Labor unions and fascism--Brazil--São Paulo--History--20th century.
Rossoni, Edmondo, 1884-1965--Political and social views.
Sorelli, Giulio, 1877---Political and social views.
Syndicalism--Brazil--São Paulo--History--20th century.