Columbia subject headings:
Brazil, Northeast--Economic conditions.
Brazil, Northeast--Rural conditions.
Brazil, Northeast--Social conditions.
Rural poor--Brazil, Northeast.
Harvard subject headings:
Brazil, Northeast--Economic conditions.
Brazil, Northeast--Rural conditions.
Brazil, Northeast--Social conditions.
Brazil--Economic conditions--1964-1985.
Rural poor--Brazil, Northeast.
Princeton subject headings:
Brazil, Northeast--Economic conditions.
Brazil, Northeast--Social conditions.