Suryŏngnim kwa chuchʻe kwahak ŭi 40-yŏn
By: [pʻyŏnjip Hyŏngmyŏng Sajŏk Tŏksŏng Pʻyŏnjippu]
Publisher: Sahoe Kwahak Chʻulpʻansa
Published: 1988
Place of publication: [Pʻyŏngyang]
Language: kor
Number of pages: 400
Subjects: Science and state
Notes: Cover title.