Ŭiryowŏn isimnyŏnsa
Publisher: Kyŏnghŭi Ŭiryowŏn
Published: 1992
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 771
Other titles: Ŭiryowŏn 20-yŏnsa.