Chŏng̕uk kongjak kigye chejo ŏpchʻe siltʻae chosa pogosŏ
Series: Chŏngbo charyo 84-90
Publisher: Chungso Kiŏp Chinhŭng Kongdan
Published: 1984
Place of publication: [Seoul]
Language: kor
Number of pages: 152
Subjects: Machine industry
Other titles: Siltʻae chosa pogosŏ.