Columbia subject headings:
Agriculture--Economic aspects--Latin America--Congresses.
Latin America--Economic conditions--1945---Congresses.
Rural-urban migration--Brazil--Congresses.
Rural-urban migration--Latin America--Congresses.
Harvard subject headings:
Agriculture--Economic aspects--Latin America--Congresses
Latin America--Economic conditions--1945---Congresses.
Rural-urban migration--Brazil--Congresses.
Rural-urban migration--Latin America--Congresses.
Princeton subject headings:
Labor mobility--Latin America.