Chuhae yongbi ŏchʻŏnʼga
By: Yi Sang-chʻun pʻyŏnsul
Publisher: Tonghwa Chʻulpʻan
Published: 1946
Place of publication: Kyŏngsŏng
Language: kor
Number of pages: 76
Work titles: Yongbi ŏch'ŏn'ga