Yilma Haroyu, Muktar Bayeh and Habte Wolle (2016) “Valuation of environmental goods and services: The case of Bale Mountains National Park, Ethiopia”, African Journal of Environmental Economics and Management, 4(1), pp. 270–281. Available at: https://elixirpublishers.in/index.php/ajeem/article/view/1037 (Accessed: 5 August 2025).