Pyŏnhyŏk sidae
Subtitle: chŏngsang ŭl hyanghan kojŏn sok ŭi inʼganhak --pyŏnhyŏk sidae
By: Chŏng Hyŏn-u.
Edition: Chʻopʻan
Publisher: Ilsŏn Kihoek
Published: 1990
Place of publication: Sŏul-si
Language: kor
Number of pages: 322