Chaemi nanŭn suhak nori
Publisher: Kŭmsŏng Chʻŏngnyŏn Chʻulpʻansa
Published: 1985
Place of publication: [Pʻyŏngyang]
Language: kor
Number of pages: 120
Subjects: Juvenile literature; Mathematical recreations
Other titles: Suhak nori.