“Farmers’ Willingness to Pay for Improved Soil Conservation Practices in Kuyu Woreda, North Shoa Zone of Oromia, Ethiopia: Application of Contingent Valuation Method”. Singaporean Journal of Business Economics and Management 5, no. (12) (December 31, 2017): 39–48. Accessed July 9, 2026. https://singaporeanjbem.com/index.php/SJBEM/article/view/386.