Columbia subject headings:
Indians of Mexico--Mexico--Chiapas--Congresses.
Tzeltal Indians--Congresses.
Tzotzil Indians--Congresses.
Harvard subject headings:
Chiapas (Mexico)--Social life and customs--Congresses.
Indians--Congresses.
Tzeltal Indians--Congresses.
Tzotzil Indians--Congresses.
Princeton subject headings:
Indians of Mexico--Chiapas--Congresses.
Tzeltal Indians--Congresses.
Tzotzil Indians--Congresses.