Yŏng-dŏk Yi

1926

• Ingan kyoyuk ŭl wihan kyoyuk kwajŏng kwa suŏp ŭi tʻamgu
• Kyoyuk kwajŏng
• Kyoyuk ŭi kwajŏng
• Saenghwal chido ŭi wŏlli wa silche
• Tŏ naŭn kyoyuk ŭi tʻamgu