Thi Thu Ha, Tran, and Pham Van Dien. “ENVIRONMENTAL LEASE SERVICES FOR ECOTOURISM BUSINESS IN CAT BA NATIONAL PARK, VIET NAM”. Journal of Forestry Science and Technology, no. 3 (May 20, 2016): 049–059. Accessed November 21, 2024. https://journal.vnuf.edu.vn/en/article/view/1248.