Columbia subject headings:
Harvard subject headings:
Azores--Civilization--Congresses.
Popular culture--Azores--Congresses.
Popular culture--Congresses
Popular culture--Portugal--Congresses.
Portugal--Civilization--Congresses.
Princeton subject headings:
Popular culture in literature--Congresses.
Portugal--Civilization--Congresses.
Portugal--Social life and customs--Congresses.
Portuguese literature--History and criticism--Congresses.