Tamiru Hirpa, and Tamiru Hirpa. “Effect of Intercrop Row Arrangement on Maize and Haricot Bean Productivityand the Residual Soil”. Global Journal of Science Frontier Research 14, no. D4 (March 15, 2014): 27–34. Accessed May 2, 2024. https://journalofscience.org/index.php/GJSFR/article/view/1176.