Pengsisomboun, S., Paphaphanh, P., Kunyalong, L., Phongthady, N., Chansompou, V., & Phonpaserd, P. (2022). Study of Spatial Distribution and Characteristics of Littering Spots in Houy-Markhiew Watershed, Vientiane Capital. Souphanouvong University Journal Multidisciplinary Research and Development, 8(1), 144–153. Retrieved from http://www.su-journal.com/index.php/su/article/view/179