80-yŏndo segye kyŏngje muyŏk hwanʼgyŏng mit chŏnmang
By: [pʻyŏnjibin Im Kwang-wŏn].
Series: Mugong charyo ; 19-5
Publisher: Taehan Muyŏk Chinhŭng Kongsa
Published: 1980
Language: kor
Number of pages: 236