Columbia subject headings:
Harvard subject headings:
Indians of Central America--Government relations--Congresses.
Indians of Central America--Social conditions--Congresses.
Indians of Mexico--Government relations--Congresses.
Indians of Mexico--Social conditions--Congresses.
Princeton subject headings:
Indians of Central America--Government relations--Congresses.
Indians of Central America--Social conditions--Congresses.
Indians of Mexico--Government relations--Congresses.
Indians of Mexico--Social conditions--Congresses.