Columbia subject headings:
La Libertad (Chiapas, Mexico)--Antiquities.
Mexico--Antiquities.
Stone age--Mexico--La Libertad.
Stone implements--Mexico--La Libertad.
Harvard subject headings:
Chiapas (Mexico)--Antiquities.
Mexico--Antiquities.
Stone implements--Mexico--La Libertad.
Princeton subject headings:
Chiapas (Mexico)--Antiquities.
Stone implements--Mexico--La Libertad Site.