Columbia subject headings:
Mexico--Social life and customs.
Night--Social aspects--Mexico--History.
Night--Social aspects--Portugal--History.
Night--Social aspects--Spain--History.
Nightlife--Mexico--History.
Nightlife--Portugal--History.
Nightlife--Spain--History.
Portugal--Social life and customs.
Spain--Social life and customs.
Harvard subject headings:
Princeton subject headings:
Night--Social aspects.
Nightlife--Mexico--History.
Nightlife--Portugal--History.
Nightlife--Spain--History.