Columbia subject headings:
Congo (Democratic Republic)--Foreign relations--1960-1997.
Portugal--Foreign relations--1933-1974.
Portugal--Foreign relations--Democratic Republic of the Congo.
Harvard subject headings:
Caetano, Marcello, 1906-1980.
Congo (Democratic Republic)--Foreign relations--Portugal.
Mobutu Sese Seko, 1930-1997.
Portugal--Foreign relations--Congo (Democratic Republic)
Spínola, António de.
Princeton subject headings:
Caetano, Marcello, 1906-1980.
Congo (Democratic Republic)--Foreign relations--Portugal.
Mobutu Sese Seko, 1930-1997.
Portugal--Foreign relations--Congo (Democratic Republic).
Spínola, António de.