Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Argentina--Tucumán.
Peasants--Argentina--Tucumán.
Sugar trade--Argentina, Northeast.
Sugarcane industry--Argentina--Tucumán.
Tobacco industry--Argentina, Northeast.
Tobacco industry--Argentina--Tucumán.
Princeton subject headings:
Agricultural laborers--Argentina, Northwest.
Agriculture--Economic aspects--Argentina, Northwest.
Agriculture--Social aspects--Argentina, Northwest.
Sugarcane industry--Argentina, Northwest.
Tobacco industry--Argentina, Northwest.