Home Publications & Data Journal Article Common bean as a cash earner in Sub-Saharan Africa author(s) Wortmann, Charles S. published in1999 original file download full citation Wortmann, Charles S.; Eledu, Charles A.; David, Soniia; Singh, Shree P. 1999. Common bean as a cash earner in Sub-Saharan Africa. Bean Improvement Cooperative. Annual Report (USA). 42:103-104.