Columbia subject headings:
Harvard subject headings:
Congo (Democratic Republic)--History--To 1908
Congo (Democratic Republic)--Politics and government--1885-1908
Léopold II, King of the Belgians, 1835-1909.
Princeton subject headings:
Belgium--Colonies--History.
Belgium--Relations--Congo (Democratic Republic).
Congo (Democratic Republic)--Colonization--History.
Congo (Democratic Republic)--History--To 1908.
Congo (Democratic Republic)--Relations--Belgium.
Genocide--Congo (Democratic Republic)--History.
Léopold II, King of the Belgians, 1835-1909.
Massacres--Congo (Democratic Republic)--History.