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Chŏng-sŏp Yun

  • Chʻodŭng hakkyo  udŭng sae kugŏ sajŏnChʻodŭng hakkyo udŭng sae kugŏ sajŏn
  • Hanʼguk ŭi tosi yŏnʼguHanʼguk ŭi tosi yŏnʼgu
  • Tosi kyehoeksaTosi kyehoeksa