Tena, Esayas, Abraham G/Hiwet, and Mashila Dejene. 1. “Quantitative and Qualitative Determination of Weeds in Cotton-Growing Areas of Humera and Metema, Northwestern Ethiopia”. Ethiopian Journal of Applied Science and Technology 3 (1), 57-69. https://ejhs.ju.edu.et/index.php/ejast/article/view/842.