“Host-Bradyrhizobium relationships and nitrogen-fixation in the Bambarra groundnut [Voandzeia subterranea (L.) Thouars nom. cons.]” (1990) Tropical Agriculture, 67(2). Available at: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/1760 (Accessed: 27 April 2025).