Columbia subject headings:
Africa, West--Colonization.
Africa, West--Commerce--History.
Africa, West--History--1884-1960.
Harvard subject headings:
Africa, West--Colonization.
Africa, West--Commerce--History.
Africa, West--History--1884-1960.
Princeton subject headings:
Africa, West--Colonization.
Africa, West--Commerce--History.
Africa, West--History.