FREZGHI, HURUY, BALWAN SINGH, and WOLDESELASSIE OGBAZGHI. 2020. “Ratio of Catchment to Cultivated Area for Different Slopes under Runoff Farming of Sorghum at Hamelmalo, Eritrea”. Journal of Soil and Water Conservation 18 (1). https://epubs.icar.org.in/index.php/JSWC/article/view/107872.