Tsetsegmaa Agvaantseren, Bayarsuren Badarch and Altantsetseg Tseveg 2022. THE IMPACT OF DIESEL BUS EMISSIONS ON AIR POLLUTION IN ULAANBAATAR AND ATTEMPT TO REDUCE IT. World Science. 4(76) (Jun. 2022). DOI:https://doi.org/10.31435/rsglobal_ws/30062022/7829.