Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Brazil--Paraná (State)
Agriculture--Economic aspects--Brazil--Paraná (State)
Labor supply--Brazil--Paraná (State)
Paraná (Brazil : State)--Economic conditions.
Princeton subject headings:
Agricultural laborers--Brazil--Paraná (State).
Agriculture--Economic aspects--Brazil--Paraná (State).
Labor supply--Brazil--Paraná (State).
Paraná (Brazil : State)--Economic conditions.