Columbia subject headings:
Harvard subject headings:
Agricultural laborers
Agricultural laborers--Brazil--São Paulo (State)--History.
Brazil
Migrant agricultural laborers--Brazil--São Paulo (State)--History.
Migrant agricultural laborers.
Seasonal labor--Brazil--São Paulo (State)--History.
Seasonal labor.
Princeton subject headings:
Agricultural laborers--Brazil--São Paulo (State)--History.
Migrant agricultural laborers--Brazil--São Paulo (State)--History.
Seasonal labor--Brazil--São Paulo (State)--History.