Columbia subject headings:
Catholic Church--Portugal--History--20th century.
Church and state--Portugal--History--20th century.
Ecclesiastical law--Portugal.
Portugal--Politics and government--20th century.
Harvard subject headings:
Catholic Church--Portugal--History--20th century.
Church and state--Portugal--History--20th century.
Portugal--History--1910-1974.
Portugal. Laws, etc.
Princeton subject headings:
Catholic Church--Portugal--History--20th century.
Church and state--Portugal--History--20th century.
Ecclesiastical law--Portugal.
Portugal--Politics and government--20th century.