00584naa#a2200205#i#450# EN\\bibl\77600 20250330092902.7 1819-4036 20130525b2013####ek#y0engy0150####ca RUS RU ENVIRONMENTAL AND AIR POLLUTION PROBLEMS OF DARKHAN Journal article Krasnoyarsk Krasnoyarsk State Agrarian University 2013 3 с. Journal article local . 502.7(517.3) RUS Davaabaatar Z Bayarsaykhan G Tsuglenok N V kgau.editorum.ru