Quang Anh H, The Doi B, Minh Toan P. SAMPLING PROTOCOLS FOR FOREST AERIAL SURVEY IN COLORADO, US. J. Forest. Sci. Technol. [Internet]. 2016 May 20 [cited 2024 Nov. 23];(3):020-9. Available from: https://jvnuf.vjst.net/en/article/view/1244