Columbia subject headings:
Land settlement--Brazil--Maranhão--History--20th century.
Rodovia Transamazônica (Brazil)--Economic aspects--History.
Harvard subject headings:
Land settlement--Brazil--Maranhão--History--20th century.
Rodovia Transamazônica (Brazil)--Economic aspects--History.
Princeton subject headings:
Agricultural colonies--Brazil--Maranhão.
Land settlement--Brazil--Maranhão.
Land tenure--Brazil--Maranhão.