Columbia subject headings:
Catholic Church--Portugal--History--20th century.
Portugal--Economic conditions--20th century.
Portugal--Politics and government--1933-1974.
Portugal--Social conditions--20th century.
Harvard subject headings:
Catholic Church--Portugal--History--20th century.
Portugal--Economic conditions--20th century.
Portugal--Politics and government--1933-1974.
Portugal--Social conditions--20th century.
Princeton subject headings: