Columbia subject headings:
Portugal--Foreign relations--1974-
Portugal--History--Revolution, 1974.
Portugal--Politics and government--1974-
Harvard subject headings:
Portugal--Foreign relations--1974-
Portugal--History--Coup d'état, 1975.
Portugal--History--Revolution, 1974.
Portugal--Politics and government--1974-
Princeton subject headings:
Portugal--Foreign relations--1974-
Portugal--History--Coup d'état, 1975.
Portugal--History--Revolution, 1974.
Portugal--Politics and government--1974-