Chʻang-yong Kang

1957

• Chʻinhwanʼgyŏng nongjajae ŭi hyoyulchŏk iyong kwa kwalli rŭl wihan chedo kaesŏn
• Nongŏp pumun baiomaesŭ ŭi iyong hwalsŏnghwa rŭl wihan chŏngchʻaek panghyang kwa chŏllyak