2007-yŏn ilban taehak kyoyukkwa chonghap pʻyŏngka pogosŏKyun-sang Yu · First published 2007Open the Tome
2007-yŏn ilban taehak kyoyukkwa pʻyŏngka hakkwabyŏl pʻyŏngka pogosŏKyun-sang Yu · First published 2007Open the Tome
남북한중등학교도덕· 사회과교육과정및교과서비교분석연구Kyun-sang Yu, Chŏng-ho Kim, Hyŏn-jin Yun, Hyŏk-kyu Yi · First published 1997Open the Tome
