Columbia subject headings:
Harvard subject headings:
Indians of Mexico--Mexico--Villa Purificación--History.
Villa Purificación (Meico)--Economic conditions.
Villa Purificación (Meico)--History.
Villa Purificación (Meico)--Social conditions.
Princeton subject headings:
Agriculture--Mexico--Villa Purificación (Municipio)--History.
Human ecology--Mexico--Villa Purificación (Municipio)--History.
Indians of Mexico--Mexico--Villa Purificación (Municipio)--History.
Villa Purificación (Mexico : Municipio)--Economic conditions.
Villa Purificación (Mexico : Municipio)--History.
Villa Purificación (Mexico : Municipio)--Social conditions.