Columbia subject headings:
Tango (Dance)--Bio-bibliography.
Tango (Dance)--Dictionaries--Spanish.
Tango (Dance)--History.
Harvard subject headings:
Tango (Dance)--Dictionaries--Spanish.
Tango (Dance)--Encyclopedias.
Tango (Dance)--History
Princeton subject headings:
Tango (Dance)--Encyclopedias.
Tango (Dance)--History.