Aidŭl chigi
By: Yu Hong-nyŏl chiŭm
Edition: Chʻopʻan
Publisher: Chongno Sŏjŏk
Published: 1988
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 230
Subjects: Elementary Education; Elementary school teachers
Notes: Collection of his newsletters, "Kyoyuk tʻongsin".