Pyŏng-sŏ Yu

• Hanʼguk koltong immun
• Inʼgan ŭn paengnyŏn ŭl salsu itta
• Myŏngŭi yŏlchŏn
• Nongŏp kyŏngjehak
• Yŏsŏng sangwi sidae ka onda