Kugŏ kyoyuk ŭi apkil
Subtitle: kyoyuk kwajŏng ŭi haesŏl ŭl chungsim ŭro
By: Yi Hŭi-bok chŏ
Publisher: Ŏmungak
Published: 1963
Place of publication: Sŏul
Language: kor
Number of pages: 323