Columbia subject headings:
Forced labor--Congo (Democratic Republic)--History.
Slavery--Congo (Democratic Republic)--History.
Working class--Congo (Democratic Republic)--Kivu (Region)--History.
Working class--Congo (Democratic Republic)--Province orientale--History.
Harvard subject headings:
Forced labor--Congo (Democratic Republic)--History.
Slavery--Congo (Democratic Republic)--History.
Working class--Congo (Democratic Republic)--Haut-Zaïre--History.
Working class--Congo (Democratic Republic)--Kivu--History.
Princeton subject headings:
Forced labor--Congo (Democratic Republic)--History.
Labor--Congo (Democratic Republic)--Haut-Zaïre--History.
Labor--Congo (Democratic Republic)--Kivu--History.
Slavery--Congo (Democratic Republic)--History.