00493naa#a2200169#i#450# EN\INFRA-M\bibl\345 20241220174622.5 2587-9103 20130627b2013####ek#y0engy0150####ca RUS RU Methods for improving the efficiency of Korean language teaching for Russian students Journal article Moscow INFRA-M Academic Publishing LLC. 2013 5 с. Journal article local naukaru.ru