Columbia subject headings:
Harvard subject headings:
France--Foreign relations--1940-1945.
France--Foreign relations--Portugal.
Portugal--Foreign relations--1933-1974.
Portugal--Foreign relations--France.
Pétain, Philippe, 1856-1951.
Salazar, António de Oliveira, 1889-1970
World War, 1939-1945--France.
World War, 1939-1945--Portugal.
Princeton subject headings:
France--Foreign relations--Portugal.
Pétain, Philippe, 1856-1951.
Portugal--Foreign relations--France.
Portugal--Politics and government--1933-1974.
Salazar, António de Oliveira, 1889-1970.