Tongji yŏ kasŭm mattaego
Subtitle: Chŏng Myŏng-ja sijip
Series: Pʻulpit pʻanhwa sisŏn -- 20
Publisher: Pʻulpit
Published: 1985
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 162