Adzawla, W., S. A. Donkoh, G. Nyarko, P. O’Reilly, O. E. Olayide, and P. E. Awai. “TECHNICAL EFFICIENCY OF BAMBARA GROUNDNUT PRODUCTION IN NORTHERN GHANA”. UDS International Journal of Development, vol. 2, no. 2, Apr. 2016, pp. 37-49, doi:10.47740/72.UDSIJD6i.