Columbia subject headings:
Congo (Democratic Republic)--Economic conditions--1960-
Congo (Democratic Republic)--Foreign economic relations--Belgium.
Katanga (Congo)--History--Autonomy and independence movements.
Mineral industries--Congo (Democratic Republic)--Katanga--History--20th century.
Union minière du Haut-Katanga--Archives.
Union minière du Haut-Katanga--History.
Harvard subject headings:
Congo (Democratic Republic)--Economic conditions--1960-
Congo (Democratic Republic)--Foreign economic relations--Belgium.
Gécamines--History.
Katanga (Congo)--History--Autonomy and independence movements--History.
Mineral industries--Congo (Democratic Republic)--Katanga--History.
Mines and mineral resources--Congo (Democratic Republic)--Katanga--History--20th century.
Union minière du Haut-Katanga--Archives.
Union minière du Haut-Katanga--History.
Princeton subject headings:
Gécamines--History.
Mineral industries--Congo (Democratic Republic)--Katanga--History.