Columbia subject headings:
Harvard subject headings:
Africa, Portuguese-speaking--Foreign relations--Congresses.
Africa, Portuguese-speaking--Foreign relations--Portugal--Congresses.
Africa, Portuguese-speaking--Foreign relations--South Africa--Congresses.
Africa, Portuguese-speaking--Foreign relations--United States--Congresses.
Portugal--Foreign relations--Africa, Portuguese-speaking--Congresses.
South Africa--Foreign relations--Africa, Portuguese-speaking--Congresses.
United States--Foreign relations--Africa, Portuguese-speaking--Congresses.
Princeton subject headings:
Africa, Portuguese-speaking--Foreign relations--Congresses.
Africa, Portuguese-speaking--Foreign relations--Portugal--Congresses.
Africa, Portuguese-speaking--Foreign relations--South Africa--Congresses.
Africa, Portuguese-speaking--Foreign relations--United States--Congresses.
Portugal--Foreign relations--Africa, Portuguese-speaking--Congresses.
South Africa--Foreign relations--Africa, Portuguese-speaking--Congresses.
United States--Foreign relations--Africa, Portuguese-speaking--Congresses.