Columbia subject headings:
Education--Mexico--Distrito Federal--Curricula.
Educational law and legislation--Mexico--Distrito Federal.
Public schools--Mexico--Distrito Federal.
Schools--Mexico--Distrito Federal.
Harvard subject headings:
Princeton subject headings:
Education--Mexico--Distrito Federal--Curricula.
Education--Mexico--History.
Educational law and legislation--Mexico--Distrito Federal.
Schools--Mexico--Distrito Federal.