Diep Yen Nga, Dang, Vuong Hong Nhung, and To Thi Hien. “Microbial Contamination In The Outdoor Air At Some Garbage Collecting Places And Waste Transfering Stations”. Science & Technology Development Journal: Natural Sciences 4, no. SI (December 19, 2020): SI11-SI21. Accessed May 2, 2024. http://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/986.