Che-hwan Yi

• Chaeil Hanin ŭi chŏngbo haengtʻae wa chŏngbo pinʾgon =
• Dijitʻŏl sidae ŭi tosŏgwan chŏngbo chŏngchʻaek
• Han'guk ŭi tosŏgwan chŏngch'aek