Columbia subject headings:
Harvard subject headings:
Catholic Church--Mexico--History--Congresses.
Catholic Church--Political aspects--Mexico--Congresses.
Catholic Church--Social aspects--Mexico--Congresses.
Mexico--History--Congresses.
Princeton subject headings:
Catholic Church--Mexcio--Social aspects--Congresses.
Catholic Church--Mexico--History--Congresses.
Catholic Church--Mexico--Political aspects--Congresses.
Mexico--History--Congresses.