30-tae ŭi sŏnggong chakchŏn
By: [chŏja Yi Chong-nin]
Publisher: Ŏnŏ Munhwasa
Published: 1982
Place of publication: Sŏul
Language: kor
Number of pages: 303
Subjects: Success
Other titles: Samsiptae ŭi sŏnggong chakchŏn.