Hai, R., Li Zhi’an, J. Shuguang, P. Shaolin, Y. Zuoyue, and W. Zhengfeng. “Ecological Models for Rehabilitation of Degraded Hilly Lands in Southern China”. Uganda Journal of Agricultural Sciences 9, no. 1 (September 21, 2004): 312–319. Accessed November 24, 2024. http://journal.naro.go.ug/index.php/ujas/article/view/235.