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Yŏng Han

  • Taejin ŭi kihak kwa Chŏng Yag-yong ŭi sirhak ŭi kŭndaesŏng pigyo yŏnʾguTaejin ŭi kihak kwa Chŏng Yag-yong ŭi sirhak ŭi kŭndaesŏng pigyo yŏnʾgu