Columbia subject headings:
Botha, P. W. (Pieter Willem)
Presidents--South Africa--Biography.
Prime ministers--South Africa--Biography.
South Africa--Politics and government--1978-1989.
Harvard subject headings:
Botha, P. W. (Pieter Willem)
South Africa--Politics and government--1978-
South Africa--Politics and government--1978-1989.
Princeton subject headings:
Botha, P. W. (Pieter Willem)
South Africa--Politics and government--1978-1989.