Pigyo munhak
By: Yi Hye-sun pʻyŏn.
Series: Chungang inmun kwahak chʻongsŏ ; 4
Publisher: Chungang Chʻulpʻan
Published: 1981
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 23