Ŭn-jin Yi

1952

• Hanʼguk sanŏp sahoehak ŭi yŏnʼgu tonghyang
• Hanʼguk ŭi chŏngchʻi wa sŏnʼgŏ munhwa
• Nodongja ka mannan yuryŏng
• Nodongja ka ppajin surŏng