Columbia subject headings:
Belgium--Colonies--Africa--Administration.
Congo (Democratic Republic)--History--1908-1960.
Congo (Democratic Republic)--History--To 1908.
Harvard subject headings:
Belgium--Colonies--Africa--Administration.
Congo (Democratic Republic)--History--1908-1960
Congo (Democratic Republic)--History--To 1908
Princeton subject headings:
Belgium--Colonies--Africa--Administration.
Congo (Democratic Republic)--History--1908-1960.
Congo (Democratic Republic)--History--To 1908.