Kaesŏng sangin ŭi sangsul
By: Kim Yong-un.
Edition: Che 1-pʻan
Series: Hanʼgil sanmun chŏngsin -- 18
Publisher: Hanʼgilsa
Published: 1986
Place of publication: Sŏul
Language: kor
Number of pages: 238
Subjects: Mathematics -- Miscellanea