Yŏksajŏk yumullon
By: /chŏja Kimchʻaek Kongŏp Taehak Chʻŏrhak Kanghwa ; pʻyŏnjip Yi Sŭng-bok].
Publisher: Kodŭng Kyoyuk Tosŏ Chʻulpʻansa
Published: 1977
Language: kor
Number of pages: 21