Mekonnen, Z., Worku, A., Yohannes, T., Bahru, T., Mebratu, T., & Teketay, D. (2013). Economic Contribution of Gum and Resin Resources to Household Livelihoods in Selected Regions and the National Economy of Ethiopia. Ethnobotany Research and Applications, 11, 273–288. Retrieved from https://ethnobotanyjournal.org/index.php/era/article/view/847