Columbia subject headings:
Nigeria--Foreign relations--South Africa.
Scandinavia--Foreign relations--South Africa.
South Africa--Foreign relations--Nigeria.
South Africa--Foreign relations--Scandinavia.
Harvard subject headings:
Apartheid--South Africa
Nigeria--Relations--South Africa.
Scandinavia--Relations--South Africa.
South Africa--Relations--Nigeria.
South Africa--Relations--Scandinavia.
Princeton subject headings:
Apartheid--South Africa.
Nigeria--Foreign relations--South Africa.
Scandinavia--Foreign relations--South Africa.
South Africa--Foreign relations--Nigeria.
South Africa--Foreign relations--Scandinavia.