Columbia subject headings:
Indians of Central America--Economic conditions.
Indians of Central America--Social conditions.
Indians of Mexico--Economic conditions.
Indians of Mexico--Social conditions.
Harvard subject headings:
Guatemala--Economic conditions--Congresses.
Guatemala--Social conditions--Congresses.
Indians of Central America--Economic conditions.
Indians of Central America--Guatemala--Economic conditions--Congresses.
Indians of Central America--Guatemala--Social conditions--Congresses.
Indians of Central America--Social conditions.
Indians of Mexico--Economic conditions
Indians of Mexico--Economic conditions--Congresses.
Indians of Mexico--Social conditions
Indians of Mexico--Social conditions--Congresses.
Mexico--Economic conditions--Congresses.
Mexico--Social conditions--Congresses.
Princeton subject headings:
Indians of Central America--Economic conditions.
Indians of Central America--Social conditions.
Indians of Mexico--Economic conditions.
Indians of Mexico--Social conditions.
Social change--Central America.
Social change--Mexico.