Columbia subject headings:
Africa, Southern--Commercial policy.
Free trade--Africa, Southern.
Free trade--South Africa.
South Africa--Commercial policy.
Harvard subject headings:
Africa, Southern--Commercial policy.
Free trade--Africa, Southern.
Free trade--South Africa.
South Africa--Commercial policy.
Princeton subject headings:
Africa, Southern--Commercial policy.
Free trade--Africa, Southern.
Free trade--South Africa.
South Africa--Commercial policy.