Baasandorj, B., Ulziibayar, T., Nyambal, T. and Yundendorj, K. 2020. Monitoring study of biological pollution in stream water. Mongolian Journal of Agricultural Sciences. 29, 1 (Apr. 2020), 207–212. DOI:https://doi.org/10.5564/mjas.v29i1.1393.