Kwangŏp kwahak kisul kyŏnghŏmjip
By: chŏja Chungang Kwangŏp Yŏn'guso
Publisher: Kongŏp Chonghap Ch'ulp'ansa
Published: 1999
Place of publication: P'yŏngyang
Language: kor
Number of pages: 288
Subjects: Mining engineering
Notes: Cover title.