21-segi ŭi chibang kongmuwŏn sang.
Contributors: Hanʼguk Chibang Haengjŏng Yŏnʼguwŏn.
Series: Yŏnʼgu charyo -- 91-5; Yŏnʼgu charyo (Hanʼguk Chibang Haengjŏng Yŏnʼguwŏn) -- 91-5.
Publisher: Hanʼguk Chibang Haengjŏng Yŏnʼguwŏn
Published: 1992
Place of publication: Sŏul Tʻŭkpyŏlsi
Language: kor
Number of pages: 132
Other titles: Isibil segi ŭi chibang kongmuwŏn sang