Columbia subject headings:
Harvard subject headings:
Frontier and pioneer life--Argentina--Pampas.
Haciendas--Argentina--Pampas--History.
Pampas (Argentina)--Economic conditions.
Pampas (Argentina)--History.
Pampas (Argentina)--Social conditions.
Princeton subject headings:
Buenos Aires (Argentina : Province)--History.
Buenos Aires (Argentina : Province)--Social conditions.
Frontier and pioneer life--Argentina--Buenos Aires (Province).
Frontier and pioneer life--Argentina--Pampas.
Haciendas--Argentina--Pampas--History.