Columbia subject headings:
Migrant agricultural laborers--Argentina--Tucumán.
Sugar trade--Argentina--Tucumán.
Sugar workers--Argentina--Tucumán.
Harvard subject headings:
Migrant agricultural laborers--Argentina--Tucumán (Province)
Sugar trade--Argentina--Tucumán (Province)
Sugar workers--Argentina--Tucumán (Province)
Princeton subject headings:
Migrant agricultural laborers--Argentina--Tucumán (Province).
Sugar trade--Argentina--Tucumán (Province).
Sugar workers--Argentina--Tucumán (Province).