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Yŏng-sin Chʻoe

  • Pihaeng chʻŏngsonyŏn ŭi hakkyo chae chŏgŭng e kwanhan yŏnʼgu =Pihaeng chʻŏngsonyŏn ŭi hakkyo chae chŏgŭng e kwanhan yŏnʼgu =