Columbia subject headings:
Anarchism--Latin America--History.
Anarchism--South America--History.
Syndicalism--Latin America--History.
Syndicalism--South America--History.
Harvard subject headings:
Anarchism--Latin America--History.
Anarchism--South America--History.
Syndicalism--Latin America--History.
Syndicalism--South America--History.
Princeton subject headings: