Columbia subject headings:
Harvard subject headings:
Argentina, Northwest--History--20th century--Congresses.
Tucumán (Argentina)--Civilization--20th century--Congresses.
Tucumán (Argentina)--History--20th century--Congresses.
Tucumán (Argentina)--History--Congresses.
Princeton subject headings:
Argentina, Northwest--History--20th century--Congresses.
Tucumán (Argentina)--History--Congresses.