Columbia subject headings:
Education and state--Mexico--History--20th century.
Education, Rural--Mexico--History--20th century.
Indians of Mexico--Education--History--20th century.
Indians of Mexico--Government relations--History--20th century.
Harvard subject headings:
Education and state--Mexico--History--20th century.
Education, Rural--Government policy--Mexico--History--20th century.
Indians of Mexico--Education--Government policy--History--20th century.
Princeton subject headings:
Education, Rural--Mexico.
Indians of Mexico--Education.
Mexico--Social conditions--20th century.