Columbia subject headings:
Agriculture and state--Brazil.
Agriculture--Economic aspects--Brazil.
Agriculture--Social aspects--Brazil.
Social classes--Brazil.
Harvard subject headings:
Agriculture and state--Brazil.
Agriculture--Economic aspects--Brazil
Agriculture--Social aspects--Brazil.
Social classes--Brazil
Princeton subject headings:
Agriculture and state--Brazil.
Agriculture--Economic aspects--Brazil.
Agriculture--Social aspects--Brazil.
Social classes--Brazil.