Columbia subject headings:
Harvard subject headings:
Franco, Francisco, 1892-1975
Portugal--Foreign relations--Spain--1939-1975.
Salazar, António de Oliveira, 1889-1970
Spain--Foreign relations--Portugal--1939-1975.
Princeton subject headings:
Franco, Francisco, 1892-1975.
Portugal--Foreign relations--1933-1974.
Portugal--Foreign relations--Spain.
Salazar, António de Oliveira, 1889-1970.
Spain--Foreign relations--1939-1975.
Spain--Foreign relations--Portugal.