Columbia subject headings:
Harvard subject headings:
Buenos Aires (Argentina)--History.
Gauchos--Argentina--Buenos Aires.
Tangos--History and criticism
Princeton subject headings:
Tango (Dance)--Argentina--Buenos Aires--History and criticism.
Tango (Dance)--Social aspects--Argentina--Buenos Aires--History.
Tangos--Argentina--Buenos Aires--History and criticism.
Tangos--Social aspects--Argentina--Buenos Aires--History.