Columbia subject headings:
Portugal--Economic conditions--1974-
Portugal--Foreign relations--1974-
Portugal--Politics and government--1974-
Portugal--Social conditions--20th century.
Harvard subject headings:
Portugal--Economic conditions--1974-
Portugal--Foreign relations--1974-
Portugal--Politics and government--1974-
Portugal--Social conditions--20th century.
Princeton subject headings:
Portugal--Economic conditions--1974-
Portugal--Foreign relations--1974-
Portugal--Politics and government--1974-
Portugal--Social conditions--20th century.