"OPTIMAL CROPPING SEQUENCE OF SMALL-SCALE FARMS IN THE RAIN-FED SECTOR OF GADARIF STATE- SUDAN(1)". Excellence Journal for Community & Humanity Sciences 1, no. 1 (ديسمبر 3, 2023). تاريخ الوصول نوفمبر 15, 2024. https://ojsm.eaeu.edu.sd/index.php/EJComHumSc/article/view/45.