Abdullah, Adil, AND 		Abdul Rahman, Mohammed.
" Comparison Between Local Manufactured Panel Ridge and Conventional Disc Ridge Throughout Investigating Their Effects on Power-Use-Efficiency, Draft Force and Actual Field Productivity" <em>Tikrit Journal for Agricultural Sciences مجلة تكريت للعلوم الزراعية</em> [Online], Volume 19 Number 1 (17 April 2019)