Home › Authors › Tae-hwan O 👤 Tae-hwan O 2 books Books by Tae-hwan O Kongjang kŏnchʻuk kyehoek ŭi k Kongjang kŏnchʻuk kyehoek ŭi kibon sahang e kwanhan yŏnʼgu 1973 Midang si ui sankyongpyo an es Midang si ui sankyongpyo an eso kil ul chatta