Chosŏn kwahak kisul palchŏnsa
Subtitle: Haebang hu p'yŏn
By: Yun Myŏng-su
Publisher: Kwahak Paekkwa Sajŏn Chonghap Ch'ulp'ansa
Published: 1994
Place of publication: [P'yŏngyang]
Language: kor
Number of pages: 259
Subjects: Science; History; Technology and state
Notes: Cover title.