Columbia subject headings:
Congo (Brazzaville)--Politics and government.
Congo (Democratic Republic)--Politics and government.
Kongo Kingdom--History.
Harvard subject headings:
Congo (Brazzaville)--Politics and government.
Princeton subject headings:
Congo (Brazzaville)--History.
Congo (Brazzaville)--Politics and government--History.
Congo (Brazzaville)--Social conditions--History.
Congo (Democratic Republic)--History.
Congo (Democratic Republic)--Politics and government--History.
Congo (Democratic Republic)--Social conditions--History.