Columbia subject headings:
Catholic Church--Portugal--History--20th century.
Church and state--Portugal--History--20th century.
Portugal--Church history--20th century.
Portugal--Politics and government--1910-1974.
Harvard subject headings:
Catholic Church--Portugal--History--20th century.
Church and state--Portugal
Church and state--Portugal--History--20th century.
Portugal--Church history--20th century.
Portugal--Politics and government--1910-1974.
Princeton subject headings: