Baasandorj, Bujidmaa, Tsendtseveen Ulziibayar, Tuul Nyambal, and Khorloo Yundendorj. 2020. “Monitoring Study of Biological Pollution in Stream Water”. Mongolian Journal of Agricultural Sciences 29 (1):207-12. https://doi.org/10.5564/mjas.v29i1.1393.