Sŏng-dae Yi

• Chʻŏnyŏn kinyŏmmul pʻyŏllam
• Hyŏksin hakkyo, haengbok han paeum ŭl kkum kkuda
• Kukkyojigwŏn nodong chohap kyoyuk minjuhwa undong 30-yŏn ŭi kiŏk