PHANTHAVONG V, CHANSOMPHOU V, VONGKHAMSY H. Impact of Landfill on Surface Water Quality in Xay District, Oudomxay Province. sujournal [Internet]. 2023 Dec. 25 [cited 2026 Jan. 17];9(4):106-1. Available from: http://www.su-journal.com/index.php/su/article/view/505