Columbia subject headings:
Government, Resistance to--Portugal--History--20th century.
Middle class--Political activity--Portugal--History--20th century.
Political participation--Portugal--History--20th century.
Portugal--History--Revolution, 1974.
Harvard subject headings:
Government, Resistance to--Portugal--History--20th century.
Middle class--Political activity--Portugal--History--20th century.
Middle class--Portugal--Political activity--History--20th century.
Political participation--Portugal--History--20th century.
Portugal--History--Revolution, 1974.
Princeton subject headings:
Government, Resistance to--Portugal--History--20th century.
Middle class--Portugal--Political activity--History--20th century.
Political participation--Portugal--History--20th century.
Portugal--History--Revolution, 1974.