Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Labor unions--Brazil--History--20th century.
Agricultural laborers--Political activity--Brazil--History--20th century.
Brazil--History--Revolution, 1964.
Brazil--Politics and government--1930-1945.
Brazil--Politics and government--1954-1964.
Land reform--Brazil--History--20th century.
Land tenure--Brazil--History--20th century.
Princeton subject headings:
Agricultural laborers--Labor unions--Brazil--History--20th century.
Agricultural laborers--Political activity--Brazil--History--20th century.
Brazil--History--Revolution, 1964.
Brazil--Politics and government--1930-1945.
Brazil--Politics and government--1954-1964.
Land reform--Brazil--History--20th century.
Land tenure--Brazil--History--20th century.