Columbia subject headings:
Harvard subject headings:
Congo (Democratic Republic)--Population--1908-1960.
Congo (Democratic Republic)--Population--To 1908.
Princeton subject headings:
Belgium--Colonies--Africa.
Congo (Democratic Republic)--History--1908-1960.
Congo (Democratic Republic)--Population--History--20th century.
Congo (Democratic Republic)--Social conditions--20th century.
Indigenous peoples--Congo (Democratic Republic)