Columbia subject headings:
Fasts and feasts--Mexico--Congresses.
Festivals--Mexico--Congresses.
Holidays--Mexico--Congresses.
Mexico--Social life and customs--Congresses.
Harvard subject headings:
Festivals--Mexico--Congresses.
Mexico--Social life and customs--Congresses.
Princeton subject headings:
Festivals--Mexico--Congresses.
Mexico--Social life and customs--Congresses.