Columbia subject headings:
Rubber industry and trade--Brazil--Acre.
Rubber tappers--Brazil--Acre.
Harvard subject headings:
Acre (Brazil)--History.
Judicial power--Brazil--Acre--History.
Rubber industry and trade--Brazil--Acre.
Rubber tappers--Brazil--Acre.
Princeton subject headings:
Rubber industry and trade--Brazil--Acre.
Rubber tappers--Brazil--Acre.