On sesang illyu ŭi pit
Subtitle: 4-tae sŏngin ŭi kyohun
By: Yi Hyo-sŏng, O Kyŏng-su yŏkkŭm.
Series: Sonyŏn sonyŏ kajŏng munʼgo ; 5
Publisher: Kajŏng Munʼgosa
Published: 1981
Place of publication: Sŏul
Language: kor
Number of pages: 143