Columbia subject headings:
Indians of Mexico--Mexico--Sonora (State)--Economic conditions.
Indians of Mexico--Mexico--Sonora (State)--Ethnic identity.
Mayo Indians--Economic conditions.
Mayo Indians--Ethnic identity.
Harvard subject headings:
Indians of Mexico--Mexico--Sonora (State)--Economic conditions.
Indians of Mexico--Mexico--Sonora (State)--Ethnic identity.
Mayo Indians--Economic conditions.
Mayo Indians--Ethnic identity.
Princeton subject headings:
Indians of Mexico--Mexico--Sonora (State)--Economic conditions.
Indians of Mexico--Mexico--Sonora (State)--Ethnic identity.
Mayo Indians--Economic conditions.
Mayo Indians--Ethnic identity.