Columbia subject headings:
Portugal--History--Revolution, 1974--Causes--Bibliography.
Portugal--History--Revolution, 1974--Influence--Bibliography.
Harvard subject headings:
Portugal--History--Revolution, 1974--Causes--Bibliography.
Portugal--History--Revolution, 1974--Influence--Bibliography.
Portugal--Politics and government--20th century.
Portuguese periodicals--Bibliography.
Princeton subject headings:
Portugal--History--Revolution, 1974--Causes--Bibliography.
Portugal--History--Revolution, 1974--Infuence--Bibliography.