Columbia subject headings:
Africa--Civilization--Congresses.
African Americans--Africa--History--Congresses.
Africans--Foreign countries--History--Congresses.
Black people--Cultural assimilation--Congresses.
Black people--Race identity--Congresses.
Slavery--Africa--History--Congresses.
Harvard subject headings:
Africa--Civilization--Congresses
African Americans--Africa--History--Congresses.
Africans--Foreign countries--History--Congresses.
Black people--Cultural assimilation--Congresses.
Black people--Race identity--Congresses.
Slavery--Africa--History--Congresses.
Princeton subject headings:
Africa--Civilization--Congresses.
African Americans--Africa--History--Congresses.
Africans--Foreign countries--History--Congresses.
Black people--Cultural assimilation--Congresses.
Black people--Race identity--Congresses.
Slavery--Africa--History--Congresses.