Sang-bong O

• Chungso kiŏp ŭi kogŭp illyŏk hwakpo pangan
• Hanʾguk sanŏp ŭi chisik kyŏngjaengnyŏk kanghwa pangan
• Kaehyŏk kaebanggi ŭi Pukhan nodong sijang kwa kyŏngje hyŏmnyŏk
• Kyŏngje t'ŭkku ŭi nodong munje
• Nodong sijang chedo wa kyŏngjejŏk pulp'yŏngdŭng
• Pukhan nodong sijang ŭi hyŏnhwang