Columbia subject headings:
Harvard subject headings:
Government, Resistance to--Portugal--20th century.
Salazar, António de Oliveira, 1889-1970
Princeton subject headings:
Government, Resistance to--Portugal--History--20th century--Chronology.
Portugal--History--1910-1974--Chronology.
Salazar, António de Oliveira, 1889-1970--Chronology.