Oku, Effiom, and EmilOlorun Ambrose Aiyelari. 2014. “Green Technology for Keeping Soil-Water-Nutrient Fluxes on Cultivated Steep Land and Climate Change Mitigation”. Journal of Agriculture and Environment for International Development (JAEID) 108 (1):17-27. https://doi.org/10.12895/jaeid.20141.151.