Byambasuren, Tsagaan, Byambaa Khuukhenkhuu, Ganbaatar Ochirbat, and Darizav Tsedenbaljir. “Temporal Variation of the Pseudo Total Content of Heavy Metals in Ulaanbaatar Soil”. Proceedings of the Mongolian Academy of Sciences 59, no. 3 (December 31, 2019): 21–28. Accessed November 25, 2024. https://mongoliajol.info/index.php/PMAS/article/view/1243.