Columbia subject headings:
Agriculture--Economic aspects--Argentina--Pampas.
Agriculture--Social aspects--Argentina--Pampas.
Argentina--Rural conditions.
Farmers--Argentina--Pampas--Social conditions.
Harvard subject headings:
Agriculture--Economic aspects--Argentina--Pampas.
Agriculture--Social aspects--Argentina--Pampas.
Argentina--Rural conditions.
Farmers--Argentina--Pampas--Social conditions.
Princeton subject headings:
Agriculture--Economic aspects--Argentina--Pampas.
Agriculture--Social aspects--Argentina--Pampas.
Argentina--Rural conditions.
Farmers--Argentina--Pampas--Social conditions.