Columbia subject headings:
Black people--Portugal--History.
Portugal--Church history.
Harvard subject headings:
Black people--Portugal--History.
Catholic Church--Portugal--Societies, etc.--History.
Portugal--Church history
Princeton subject headings:
Black people--Civil rights--Portugal--History.
Black people--Portugal--Religion--History.
Catholic Church--Portugal--Societies, etc,--History.
Portugal--Church history.
Portugal--Ethnic relations--History.