Columbia subject headings:
Privatization--Mexico.
Telecommunication--International cooperation.
Telephone companies--Mexico.
Teléfonos de México.
Harvard subject headings:
Privatization--Mexico.
Telecommunication--International cooperation
Telephone companies--Mexico.
Teléfonos de México.
Teléfonos de México.
Princeton subject headings:
Privatization--Mexico.
Telecommunication--International cooperation.
Telephone companies--Mexico.
Teléfonos de México.