B, Minjmaa, and Oyunchimeg T. “Sources of Heavy Metal Contamination in Landfill Soil Covers of Ulaanbaatar”. Mongolian Journal of Agricultural Sciences 22, no. 03 (May 9, 2018): 140–144. Accessed July 22, 2024. https://mongoliajol.info/index.php/MJAS/article/view/966.