국제기준에서 바라본 북한 광물자원 평가와 개발환경 = An appraisal of the natural resources of Democratic People's Republic of Korea(DPRK) and its development environment from the perspective of internationally recognized rescources & reserves classification standards
An appraisal of the natural resources of Democratic People's Republic of Korea(DPRK) and its development environment from the perspective of internationally recognized rescources & reserves classification standards