00649naa#a2200205#i#450# EN\INFRA-M\bibl\17990 /en/manage/index 20250410025455.4 2587-9103 20170913b2017####ek#y0engy0150####ca RUS RU A Study of the State of Balhae In Korea And Research Perspectives Journal article Moscow INFRA-M Academic Publishing LLC. 2017 6 с. Journal article local Лингвистика. Языкознание. Языки. 81 RUS Iok Cho Ko En Chol' test.editorum.ru /en/manage/index