21-segi kŭllobŏl kiŏmnon
By: Yi Chae-gi chŏ
Edition: Chʻopʻan
Publisher: Chʻŏngmok Chʻulpʻansa
Published: 2006
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 377
Other titles: Isip-ilsegi kŭllobŏl kiŏmnon
Notes: Includes bibliographical references and index.