Yirga Sewunet, and Berhanu Getinet. “Economic Efficiency in Maize (Zea Mays L.) Production of Small Holder Farmers in Amhara Regional State, Ethiopia”. Ethiopian Journal of Environment and Development 5, no. 2 (December 30, 2023): 35–55. Accessed February 27, 2026. https://journal.du.edu.et/index.php/ejed/article/view/340.