Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--Argentina--Pampas.
Agriculture--Social aspects--Argentina--Pampas.
Farms, Size of--Argentina--Pampas.
Pampas (Argentina)--Rural conditions.
Princeton subject headings:
Agriculture--Economic aspects--Argentina--Pampas.
Agriculture--Social aspects--Argentina--Pampas.
Argentina--Rural conditions.