Peoples of the Niger-Benue Confluence : The Nupe by Daryll Forde ; The Igbira by Paula Brown ; The Igala by Robert G. Armstrong ; The Idoma-speaking peoples by Robert G. Armstrong.
Niger-Benue Confluence.
Forde, Cyril Daryll,1902-
Armstrong, Robert G.
Brown, Paula.
London : International African Institute,
1955.