“Intercropping maize (Zea mays L.) and upland rice (Oryza sativa L.) with common bean (Phaseolus vulgaris L.) in southern Sudan”, ta, vol. 74, no. 1, Jan. 1997, Accessed: Apr. 17, 2025. [Online]. Available: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/2472