Ch'ang-yong Kang

1957

• Nonggigye sanŏp ŭi palchŏn pangan
• Nongnimŏp hubang yŏn'gwan sanŏp ŭi chŏllyakchŏk palchŏn pangan
• Nongnimŏp hubang yŏn'gwan sanŏp ŭi chŏllyakchŏk palchŏn pangan (2/3-ch'a yŏndo)
• Nongŏp, nongch'on enŏji sugŭp mit chŏngch'aek chindan