Columbia subject headings:
Harvard subject headings:
African literature--History and criticism--Congresses
Okara, Gabriel, 1921-2019--Congresses.
Princeton subject headings:
Africa--Civilization--Western influences--Congresses.
Africa--Languages--Social aspects--Congresses.
African literature--History and criticism--Theory, etc.--Congresses.
Okara, Gabriel, 1921---Criticism and interpretation--Congresses.