Columbia subject headings:
Belgium--Colonies--Congo (Democratic Republic)
Belgium--Politics and government--1830-1914.
Léopold II, King of the Belgians, 1835-1909.
Harvard subject headings:
Belgium--Colonies--Congo (Democratic Republic)
Belgium--Colonies.
Belgium--Politics and government--1830-1914.
Léopold II, King of the Belgians, 1835-1909.
Princeton subject headings:
Belgium--Colonies--Congo (Democratic Republic).
Belgium--Politics and government--1830-1914.
Léopold II, King of the Belgians, 1835-1909.