Columbia subject headings:
Harvard subject headings:
Presidents--Sierra Leone--Biography.
Sierra Leone--Politics and government--1896-1961.
Sierra Leone--Politics and government--1961-
Stevens, Siaka Probyn, 1905-
Stevens, Siaka Probyn, 1905-1988
Princeton subject headings:
Presidents--Sierra Leone--Biography.
Sierra Leone--Politics and government--1896-1961.
Sierra Leone--Politics and government--1961-
Stevens, Siaka Probyn, 1905-1988.