In-gŭn Wang

1931

• Sŏul Taehakkyo kyosu 40-yŏn
• Hanʾguk nongchʻon kaebal yŏnʾgu =
• Hyŏndae ŭi nongchʻon sahoehak
• Nongchʻon sahoehak kaeron
• Nongchʼon sahoehak
• Singnyang chagŭp kwa nongŏp hyŏksin e kwanhan yŏnʼgu