Columbia subject headings:
Harvard subject headings:
Kongo Kingdom--Colonization.
Kongo Kingdom--History.
Portugal--Colonies--Africa
Slave trade--Kongo Kingdom--History.
Princeton subject headings:
Kongo (African people)--History--19th century.
Kongo (African people)--History--20th century.
Kongo (African people)--Social life and customs.
Portugal--Colonies--Africa--History.