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O, Sŏng-gŭn (Higher education researcher)

  • Kogyo sujun ŭi taehak kwamok sŏnisuje (UP) sŏlch'i pangan yŏn'guKogyo sujun ŭi taehak kwamok sŏnisuje (UP) sŏlch'i pangan yŏn'gu