Columbia subject headings:
Argentina--History--Periodicals.
Argentina--Social conditions--Periodicals.
Pampas (Argentina)--Periodicals.
Harvard subject headings:
Argentina--History--Periodicals.
Argentina--Social conditions--Periodicals.
Pampas (Argentina)--Periodicals.
Princeton subject headings:
Argentina--History--Periodicals.
Argentina--Social Conditions--Periodicals.
Periodicals.