Columbia subject headings:
Censorship--Portugal.
Fascism--Portugal.
Government information--Portugal.
Portugal--Politics and government--1933-1974.
Harvard subject headings:
Censorship--Portugal.
Fascism--Portugal.
Government information--Portugal.
Portugal--Politics and government--1933-1974.
Princeton subject headings:
Censorship--Portugal.
Fascism--Portugal.
Government information--Portugal.
Portugal--Politics and government--1933-1974.