Chigŏp hullyŏn chedo kaesŏn ŭl wihan chosa yŏnʼgu
By: (Chigŏp hullyŏn kyosa, tʻongsin hullyŏn, kamdokcha hullyŏ) yŏnʼgu kigwan Hanʼguk Sanŏp Hullyŏn Hyŏphoe
Publisher: Nodongchʻŏng
Published: 1971
Place of publication: [Sŏul]
Language: kor
Number of pages: 385
Subjects: Vocational education